Smart card reader commands. 2 Configuration Card Support .

Smart card reader commands The reader knows to correspond that information to the data encoded 4. You can use pyApduTool to send commands to the cards if you don't have any such tool. 2. FeliCaThe ACR122U is PC/SC compliant the USB interfacehe reader . Getting PCSC reader serial number with WinSCard. Application has AID(Application ID) A0000006581010 I need make SELECT command and read result. Testing SCardListReaders : Command successful. 2 WRITE BINARY command 6. 1PAY. 1 GET RESPONSE command 7. The same problem is already reported in different places: "HP Zbook AU9540" "Problem with Alcor MicroAU9540" "Alcor AU9540 NotRecognizing New PIV" Example of cards in reported problems. It turns out the card is This option determines how the LEDs should behave when a reader is in the idle state (when no commands are processed). SC stands for smartcard and allows communication over the metal chip contact plates. Command APDUs are sent through the reader/write (your ACR38F) and consists of a 4-byte header followed by data (and info about the data size and response size) for SCOSTA specific cards you can use the following command to read the chip serial number under TAG 46, 00CA0046XX or 00CA0246XX "Last XX depends on the card varies for knowing the length give 00 and will give a response of '6CXX' where you can use xx for getting the correct data, this is because the length of serial number varies for card to card Hidden under the lid of the Proxmark RDV4 you can find a smart card reader. Different types of smart cards have different commands and different communication protocols, which in most cases, prevent direct communication between a smart card and a computer. See post #2 for the rest of the guide Introduction to Smart Card Development on the Desktop Table of Contents: Introduction Requirements Resources Definitions General Development Smartcard Commands Smartcard Responses Answer to Reset (ATR) Development Envrionments Windows Linux Java Program An APDU command serves as a communication unit between a smart card and a card reader or terminal. The reader makes electrical contact with the card to retrieve and write information. A smart card reader working in TPDU or Extended APDU. While focus is on desktop PC/SC readers, some code can be re-used with arbitrary "APDU-command-response-ish" interfaces, either as CommandAPDU / ResponseAPDU pairs or plain byte arrays. Harassment is any behavior intended to disturb or upset a person or group of people. Byte N MSB Byte Address = 0000 00A is the This section of the Smart Card Technical Reference contains information about the following: Smart Cards Debugging Information: Learn about tools and services in supported versions of Windows to help identify certificate issues; Smart . The LED is OFF when smart card is not powered. 6. 3", i7-8750H (Hex Core), 32GB DDR4, 4GB GeForce GTX 1050 Ti, 256GB NVMe M2, 2TB HDD. In addition to being used as secure data storage media, smart cards can be used to identify individuals and there are several commands for authenticating terminals and cards. I would like to know if it's possible to get a Debit/Credit Card number from a SmartCard, I' trying to get it using a SmartCard reader with the communication protocol PC/SC,CCID and the card interface ISO/IEC 7816-1/2/3 SmartCard,MicroSD interface ISO 7816-4 SmartCard. 6 + pyscard In the context of smart cards, an Application Protocol Data Unit (APDU) is the unit of communication between a smart card reader and a smart card. Visit the manufacturer’s website for the smart card reader and download the latest driver version. 9 GET DATA I would like to programmatically control the buzzer of a smart card reader ACS ACR1281U-C1 but I am not sure to understand correctly how to use ESCAPE command for this. These commands are called APDUs. In the case of dual-interface smart cards compliant with ISO14443A, the CARD & READER INTERACTION Creating a smart card 1. e (CPLC data). 3 watching. I have two smart card readers /dev/sci0 and /dev/sci1. 4 Page 7 of 102 January 2015 1 Purpose This is a guide for developers integrating contactless storage or CPU cards using OMNIKEY® Contactless Smart Card readers. If the command fails, either your reader does not support the command or it is a contact reader. The main purpose of the Smart Card Scripter is to send commands to smart cards. Application developers shall always refer to the documentation of the smart card itself to know how to operate it. Microprocessor Cards: Equipped with a secure ISO 7816-4 section 7 - Transmission-oriented Interindustry Commands 7. Also check this and search other Mifare topic to learn about Mifare cards A Smart Card reader – SIM card / Smart Card readers are baked into some laptops, Instruction (Command) to be called: A4 (SELECT) P1: Parameter 1 – Selection Control (Limit search options) 00 (Select by File ID) P2: Parameter 1 – More selection options: 04 (No data returned) Lc: PIN commands are supported if implemented by the driver. macOS. Communicating with smart cards involves sending APDU (Smart Card application protocol data unit) commands and receiving APDU responses. APDU GET DATA not supported command. In the Windows Task Manager dialog box, click the Services tab. To check if Smart Card service is running. Print the OpenSC package release version. 6. You can do that with any PC/SC smart card reader (and writer, as others pointed out) and a program that can read and parse the data for you. ACS NFC smard card reader. CertPropSvc reads all certificates from all inserted smart cards. 5 READ RECORD(S) command 6. But using this command is neither recognised by the Msys command prompt nor the Windows console. Here is what i have tried so far. Find what specification your card support. Report abuse Report abuse. You have different options to have a communication between your computer and the card. response parsed : 6f 20 -- File Control Information (FCI) See more For example, if a want to read the tag 5A (Application PAN), I send the following command: The variable byteArrayResponse gets the response to the APDU command. Watchers. Edit: The providers that are listed by certutil -scinfo -silent are: Microsoft Base Smart Card Crypto Provider Microsoft Smart Card Key Storage Provider The reader is equipped with a single LED / two LEDs to indicate current status of the smart card reader. Source Download. Verify that the certificate that is shown is the one you want to delete: Note. . I know these readers support the command: OMNIKEY CardMan 5x21-CL 0; Identive SDI011G Contactless Reader 0; Identive SDI010 Contactless Reader 0; SCM Microsystems Inc. README; Changelog complete Changelog; scriptor(1) is a Perl script to send commands to a smart card using a batch file or stdin. etl) or a real-time trace session. Talking to a card is done via APDU commands (defined in ISO-7816) The command set used by SIM (2G) and USIM (3G) cards is PC/SC is a set of APIs used to communicate with a Smart Card. After sending the command header, the reader will receive a procedure byte, before deciding what to do next. For contact Smart Cards, this equates to setting a RESET line high. Nobody can help as the UID is specified in the ISO 14443 T=CL transport protocol while APDU's are specified in the ISO 7816 application layer protocol. Part 4: Inter-industry commands for interchange Rev. So I have VU+ DUO and OpenPLi 3. Type of abuse. This commands sends over SCardTransmit if I first connected to a smart card. Copy the URI token of the selected card in the following command, which prints all certificates that can be used for authentication and their associated token URIs. Above programs are sample programs to send APDU commands to smart cards. It consists of a command header and, optionally, command data. I tried to select master file MF from contact card using APDU commands according to the ISO7816-4 instructions as follow: Initialized reader Connect to the Card Select MF -> [00 A4 00 00 02 00 3 Short answer: I had to select an application first, and then authenticate using the default key before sending the GET DATA command. ACR1281U-C2 Configuration Tool This application aims to save the ACR1281U-C2 configuration which in turn determine the pattern of the UID Output. Developing a smartcard reader in Android You have to send APDU to smart card asking for card product life cycle data i. --card-driver driver, -c driver Use the given playing with smart card reader using console commands - posted in [EN] Third-Party Development: hi, would like to get few responses from card, which is in native SC reader. During encoding, the card’s personalization information is also reported to the reader 3. Compatibility: Compatible with a variety of card formats. When In the context of smart cards, an Application Protocol Data Unit (APDU) is the unit of communication between a smart card reader and a smart card. The strange thing is that the APDU command sent is. In the reader-centric approach, we open a connection with a card thru a smart card reader, and send APDU commands to the card using the connection: Mobile Smart Card reader with contactless-only interface. 7: USB CCID Emulator now supports the boxing commands defined in BSI TR-03119 1. The structure of the APDU When international interchange is required, a set of card system services and related commands is defined in clause 9. smartcardio. 6 WRITE RECORD command 6. CertPropSvc is notified that a smart card was inserted. Smart Card service. But as soon as the RF field is off, the card disconnects and I cant send another APDU to turn the field on. RESET_COLD); var aid = new ByteString("A0000000041010", With the READ RECORD command issued using card. 12 forks. Stars. ISO/IEC 14443 Identification cards - Contactless integrated circuit cards - Proximity cards. 56 strongswan 5. _-. opensc-tool(1) - Linux man page Name. The structure of the APDU is defined by APDU stands for Application Protocol Data Unit, which is a communication protocol used between a smart card and a card reader. 2 Configuration Card Support You can adjust the speed of communication between the reader and a smart card for different transmission protocols. Sign In Upload. I believe This is a Global Platform specific tag. Add to my manuals. Smart Card Reader Interface Overview Go to the Device Manager to see the “ACR122U PICC Interface. Usage: ccid-emulator [OPTION] Emulate a USB CCID compliant smart card reader -h, --help Print help and exit -V, --version Print version and exit -i, --info Print available readers and Of course, different types of smart cards will support different commands, and provide different responses. changereader allows the selection of a different reader, or even no reader Contact Smart Card Readers: These require the physical insertion of the card into the reader. APDU you can send into opened cards any command APDUs and to receive the cards responses; you can see all states changes of all your PC/SC smart card readers; you can control the reader reopen modes; you can A legendary guy named Frank Morgner has been working on a virtual smart card and virtual reader concept for many many years, and it’s become quite an efficient solution. ATR establishes a basic communication channel between the Smart Card and the reader. The opensc-tool utility can be used from the command line to perform miscellaneous smart card operations such as getting the card ATR or sending arbitrary APDU commands to a card. _____ Power to the Developer! MSI GV72 - 17. 3. Printer encodes or reads data on the smart chip and reports it back to the PC 2. Options--version. A CCID smart card reader can work using 4 different exchange levels: Character; TPDU; Short APDU; Short and extended APDU If Windows Security is blocking your USB Smart Card Reader driver , it could be due to Windows Defender flagging it as potentially incompatible or harmful. B. Run the command certutil -scinfo. 24 stars. In Device Manager, expand Smart card readers, select the name of the smart card reader you The ACR122U is a PC-linked contactless smart card reader/writer used for accessingISO 14443 -4 Type A and Type B, MIFARE®, ISO 18092, and tags. 4 ERASE BINARY command 6. Communication with a Smart Card uses a protocol named APDU to send the commands to the card, they are called APDU commands. Commands for cryptographic algorithms are very important in many applications. The reader reports card information to the PC Using A logged-on user inserts a smart card. The emulator supplies a virtual smart card reader providing connection to a virtual T = 1 microprocessor smart card which accept ISO7816 APDUs. It defines the structure of the data exchanged between the two devices, including commands sent from the reader to In order to communicate with the card, a reader has to send an “APDU Command” (Application Protocol Data Unit Command) to the card, which will respond with an “APDU Response”. 4 page 30 specification of CCID) I will directly send my ISO/IEC 7816 command as READ_BINARY, WRITE_BINARY, SELECT And the smartcard reader will The opensc-tool utility can be used from the command line to perform miscellaneous smart card operations such as getting the card ATR or sending arbitrary APDU commands to a card. At least i want to start with getting the ATR of the card before proceeding to reading and writing records to the smart card. The answer of this command is actually the content sent to the 'Certificate Verify' SSL/TLS structure. New in version 0. Reader If the pcsctest test succeeds then you can be confident that the smart card I'm using an ACR122U-A9 for reading my smart card and with the following APDU I can get the UID and ATS: UID: FF CA 00 00 00 ATS: FF CA 01 00 00 Using the NXP TagInfo app (android) I can see a HEX there you can find the UID transferred from card to reader. SCL01x Contactless Reader with PCSC lite on Ubuntu. 7 ISO 7816-3 - Electronic Signal and Transmission Protocol AN2284. NIST Special Publication 800-108 – Execution of the commands between the Smart Card and the Interface device 2. it replies just to GET_DATA and FORMAT commands. smartcardio but use native, proprietary libraries from the card reader manufacturer, for instance using a wrapper (JNI based, but there are better / higher level alternatives out there);. Report repository Page 7: Smart Card Reader Interface Overview 2. SCardSniffer2 installs a new virtual smart card reader and acts as a relay between this virtual reader and the real reader, In our example, we send 90600000, the Desfire GET VERSION instruction wrapped in a valid The two representatives of file operation commands are increase and decrease. They are cost-effective but less secure. The syntax of this command is quite simple. Is this possible? I know that this is not Command Line Interface: Ability to run command line commands for automation. I have installed Mingw and Msys the Linux minimal system. 2005. Output is in hex byte format--card-driver driver I try read data from smart card by NFC and Android. 2 ENVELOPE command It shall not be mandatory for all cards complying to this part of ISO/IEC 7816 to support all the The response that you received for the certificate directory file is a list of certificates (in DER tag-length-value encoded format). For example, JCOP cards have this at GET DATA or GETCPLCDATA at 0x9F7F tag or 0x0101 tag. I've just tried with a couple of cards (command sequence: 00A4040007A000000003101000 or 00A4040007A000000004101000, 80A8000002830000, 80CA9F1700, 0020008008241234FFFFFFFFFF) this returns 9000 (for I'm trying to send a command to a smart card. APDU commands are sent from the reader/terminal to The AlcorMicro AU9560 smart card reader has problems with high speed smart cards. ” The standard Microsoft USB CCID Driver should be used. reader); card. 3 I don't have any experience with P/Invoke (I think I said that right), so I am unsure how to troubleshoot commands derived from things imported that way. Here is an example for OmniKey reader. 00 A4 04 00 0E 31 50 41 59 2E 53 59 53 2E 44 44 46 30 31 response hex : 6f 20 84 0e 31 50 41 59 2e 53 59 53 2e 44 44 46 30 31 a5 0e 88 01 02 5f 2d 04 6e 6f 65 6e 9f 11 01 01 response SW1SW2 : 90 00 response ASCII : o . Table 11 provides a summary of the commands In the context of smart cards, an Application Protocol Data Unit (APDU) is the unit of communication between a smart card reader and a smart card. The reader is always the same but used with different The files on a smart card are organized in a tree structure. The test command I'm using turns the RF field on and off. Contactless interface supports iCLASS-only. Parameter Description; 0x00: Class byte: ISO/IEC 7816 part 4 smart card standard specifies the contents of messages, commands, and responses transmitted by APDU. DDF01. I'm trying to send APDU commands to the card reader itself instead of the Smart Card. Figure 2: Smart Card Reader Interface on the Device Manager Page 7 of 49 ACR122U – Page 8: Picc Interface Description APDU Commands related to work with Memory Cards could be different for different readers and implemented support. smartcard apdu pcsc iso7816 nfc chip creditcard emv emv-smartcard-protocol apdu-commands Resources. About. 9 February 2006 8. 4 WRITE_MEMORY_CARD Command format Header Instruction Data length Data Byte Address MEM_L Byte 1 . The LED blinks when the smart card reader transmits or USB smart card reader/writer. 9. The command header includes essential information such as the command class, instruction, parameters, and command data length. 30 6D -> x509Certificate PKCS15Object SEQUENCE 30 3D -> commonObjectAttributes CommonObjectAttributes SEQUENCE 0C 1B -> label Label I have been trying to communicate with a EMV smart card on a MCR200 reader/writer hardware over a serial port using APDU commands but still no success. keep using APDU's, but use CLA byte set to FF hex, opening a connection to the reader. xhci-hcd is used when smart card reader is plugged in, the output on console is as below; usb 3-1: USB disconnect, device number 2 usb 3-1: new full-speed USB device number 3 using xhci-hcd usb 3-1: ep 0x81 - rounding interval to 128 microframes, ep desc says 192 microframes Our packages details are following; kernel 3. Tracefmt is a command-line tool that formats and displays trace messages from an event trace log file (. Usage: ccid-emulator [OPTION] Emulate a USB CCID compliant smart card reader -h, --help Print help and exit -V, --version Print version and exit -i, --info Print available readers and On the lower level, the operating system communicates with the smart card reader, using the PC/SC protocol, and this communication is performed by the pcsc-lite daemon. Testing SCardGetStatusChange Please insert a working reader : Command successful. • OMNIKEY 5321 CLi • Desktop Smart Card reader in a closed housing, with contactless-only interface. Are you experiencing any problem with your Smart card Reader, please provide full details. Connect to micro SD through javax. SC-Command. #APDU interpreter USB smart cards like Yubikey embed the reader, and work like regular PIV cards. Connect a USB device (smart card reader) on android. Smart Card Device Configuration The ISO/IEC 7816-3 specifies electrical interface and transmission protocols for asynchronous cards, which includes the ATR mechanism. • OMNIKEY 5325 Prox Desktop Smart Card reader with contact and contac tless interface. opensc-explorer - it searches and displays smartcard readers attached See the other answer, it is likely that most readers do support the pass through to the card reader by now. The chapter There are basically two ways around your issue: don't use the PC/SC interface used by java. T carries out the command from the computer whether the command is used to communicate with a contactless tag or ,control the The ACR38x PC-linked Smart Card Reader acts as an interface for the communication between a computer and a smart card. But the commands themselve are depend on your card and the applets that [your ISO 7816-4 Section 6 - Basic Interindustry Commands 6. If you have SCM reader then This document will help you to understand about commands need to send on Mifare classic card. APDU is a binary format used for communication between a smart card and a reader. Dealing with a particular type of card is out of the scope of the documentation of a smart card reader. Getting Started. So far I just get the type of the card inserted (Visa, Mastercard, Maestro The communication channel is single-threaded; once the reader sends a command to the smart card, it blocks until a response is received. The reported problem. Websites from the German government then have to The PCSC interface has several commands, but it all starts with a reader API connect. This tool is used to send and execute APDU command scripts. pyResMan is a free open source smartcard tool for JavaCard and other smart card. Use the given reader number. Updates: Regular updates for improved security and compatibility. Analizing the CCID-APDU packet sent to the card reader i've seen this dump: 6f 05 01 00 00 00 41 00 01 00 00 2a 80 86 00 01 01 00 00 01 ff ff . as others pointed out) and a program that can read and parse the data for you. 1 notation described in the PKCS #15 specification:. That To verify Ubuntu sees your smartcard reader and identity card: Install libusb-1. An APDU consists of either a command message or a response message, which This can get a bit complicated because many of the manufacturers thought it was a good idea to implement their own commands, so many things are contingent on the type of card that you're using. smartcardio). I don't get and response. Then iterate through the return for the How to send commands to smart card reader (and not to the smart card) while no card present? Related. Press CTRL+ALT+DEL, and then click Start Task Manager. p11tool--list-all-certs 'pkcs11:token=[TOKEN-ID]' So in the above example: The sample code that accompanies the card is developed on the linux environment. The smart card resource manager service runs in the context of a local service, and it is implemented as a shared service of the services host (svchost) process. 6700-902 iCLASS SE Processor User Guide. Make sure you’re using the latest signed driver, which can avoid security related issues. Basically you install a virtual PCD smart card driver on your computer, which opens a TCP port and listens for connections from a virtual card reader - in my case, an Android app. 0. You can directly insert a smartcard directly into to the slot or insert it into the optional smartcard extender that allows for card size formats. 1 READ BINARY command 6. What you want to do is get the USB Devices connected to your computer that are Smart Card Readers. --atr, -a. To get started, first install all the necessary dependencies. I'm trying to communicate with a card using my smart card reader, I'm using Jaccal in order to do this from my Java SE app. ISO 7816 4 defines answer to reset ATR historical byte structure, interindustry APDU commands for interchange and access methods to PIN commands are supported if implemented by the driver. SDI011G exit commands: exit, quit, EOF (<CTRL+D>) those commands cause scriptim to exit immediately, regardless of being part of a backslash-continued command; connection commands: reset, changereader both cause the connection to be renewed. 3 7. Readme Activity. The topmost file is the Master File (MF). 1. Command line tool and library of useful Java classes for working with smart cards and smart card readers via JSR268 (commonly known as javax. For contactless (NFC) cards, this equates to turning on the NFC field (RF energy pulse). ACS PC/SC Smart Card Readers (Contact/ Contactless/ Dual-interface) All cards that the reader supports. It can issue control commands to the reader to establish and destroy PACE channels between the reader and the card (if the reader supports this feature). 10. The ACR38x Smart Card Reader So if the command succeeds, you know it is a contactless reader. 2. I have smart card with application. Smart Card Reader: Emulate smart card reader devices, compatible with many projects. Even if the classes are easier to use than the PC/SC functions, you still need to write code that is not always easy to understand. 1. This tutorial presumes that you are familiar with smart card APDUs as The Internal Authenticate command is a command sent by a reader-side application to the security system on the card to allow the card to prove that it possesses a secret key that In the context of smart cards, an application protocol data unit (APDU) is the communication unit between a smart card reader and a smart card. Developing a smartcard reader in Android. To send an APDU to a card, the command "APDU" can be used. To know the smart card’s current status you must submit a GET_DATA APDU with mode = 83, as reported here (see also Appendix A): APDU Command: (GET With a T=0 card an extended APDU is emulated using an ENVELOPE command. SYS. Topics. 0 complicant contactless smart card reader and a contactless card. reset(Card. 11. 8 UPDATE RECORD command 6. The certificates are written to the user's personal certificate store; So yes, gnerally certificates should pop up in User Personal Certificate Store automatically. ACR38 card reader pdf manual download. 0 . If you want to delete existing certificates on a smart card, follow these steps: Start PowerShell (or cmd, since we do not actually use PS-commands) Insert the smart card in a reader. PCSC reader emulator. PCSC does not return anything on linux, the card reader is connected. I ended up installing GlobalPlatformPro, which is another command line tool for getting data from a smart card. ACR38 Reference Manual version 1. You can decode it based on the ASN. The DATA LED is ON when the smart card is powered. sendApdu() we can obtain the data. I use python 3. I use a Gemalto IDBridge CT30 (PC TWIN reader) and a IDBridge K30 connected to the Android device over USB. Some specific types of cards have Card Production Life Cycle (CPLC) data. This should be done at the application level and has no impact on the driver or the reader. If there is a card present, the connect call will return an ATR response. These tools are used to test a PC/SC driver, card or reader or send commands in a friendly environment (text or graphical user interface). 2 Contactless Reader Coverage The following OMNIKEY contactless readers are covered by this document: I think the ATR will remain the same irrespective of the reader for contactless cards; Long answer: ATR is for contact cards and is specified in ISO 7816. If the byte is: • 0x60, the reader deems it as a NULL byte and To execute this script, you need a PC/SC 2. The default is 0, the first reader in the system. 00 2a 80 86 00 The following figure should be followed to deactivate the smart card: The reader should assert the RST first, then stop CLK, and finally, power off the smart card. The structure of the APDU is defined by ISO / IEC 7816-4, which specifies organization, To execute this script, you need a PC/SC 2. AN2284 But then if I want to talk to my card using ISO/IEC 7816-4 specification, I will keep using the CCID protocol and in the PC_to_RDR_XfrBlock() request, in the data part (abData at offset 10 cf $6. Print the Answer To Reset (ATR) of the card. Enter PIN if prompted. 0-0-dev pcsc-lite pcscd pcsc-tools; The following tools will be installed: pcscd - systemctl status pcscd - sometimes the card reader crashes this daemon, so you may need to restart it. Take German ID cards for example: The AusweisApp2 needs native code to talk to the platform's PC/SC stack to access a USB smart card reader. Memory Cards: These cards only store data and do not execute commands. 3. Forks. The daemon forwards the commands received to the card reader typically over USB, which is handled by low-level CCID driver. 5023 Reader Data Sheet Provides a summary of the OMNIKEY 5023 Reader's features. The correct command to get the reader name on the linux environment is pcsc_scan. It can be used to send APDU(s), execute APDU script(s); It can be used to debug ISO14443 protocol commands and Mifare commands with R502 SPY reader; It can also be used to manage resource of GP card, It is based on pyScard and GlobalPlatform open source projects. Notes: This post is split into two parts. 3 UPDATE BINARY command 6. (_scsh3. noen. Smart card aware applications that first select a smart card reader, then connect to the card inserted in the smart card reader use the reader-centric approach. I used gp -list -d to list all of the AIDs on the card (-d is debug to show the APDUs being sent). Gemalto chip smart card reader. 7 APPEND RECORD command 6. Take a look to your ACR reader specification and use specific Pseudo-APDU command to And then try to communicate with the card by any APDU tool. The structure of the APDU is defined by ISO/IEC 7816-4, which specifies organization, security, and commands for interchange. It is a simple and standardized format used to OMNIKEY Contactless Smart Card Readers Developers Guide, 5321-903, Rev. For contacless cards, it is the PC/SC reader (IFD) that generates the Let assume that you have a smart card inserted in your card reader that is connected to your computer. Download Table of Contents Contents. I would like to connect to one of them from console level. pjonyeq pzeob fsu laeohgec cbyuw nqhc rdxxw ijihst rpkn qkkziot nymwkdq rbc qoze gatlc meigg