ATR Parser
Paste an ATR (Answer to Reset) hex string and decode every byte: initial character, format byte, interface bytes (TA/TB/TC/TD), historical bytes, and check character. Identify the card if possible.
Related Guides
Smart Card Fundamentals
Complete introduction to smart card technology.
Smart Card Reader Setup Guide
Step-by-step guide to setting up a smart card reader on Windows, macOS, and Linux with …
SIM Card Types Explained
Complete guide to SIM card types and form factors: Mini, Micro, Nano, eSIM (eUICC), iSIM, …
Understanding ISO 7816
The 15-part standard governing contact smart cards.
ISO 14443 Deep Dive
Contactless smart card communication protocol.
Smart Card Readers and Middleware
PC/SC, CCID, and middleware for card communication.
PC/SC Programming Guide
Programming with the PC/SC API for smart card communication: connecting readers, transmitting APDUs, and error …
OpenSC and Open-Source Smart Card Tools
Guide to OpenSC and open-source smart card tools for initialization, key management, and PKCS#15 structure …
MULTOS Application Development
Developing applications for MULTOS smart cards covering the MEL instruction set, application loading, and certification.
ePassport Technology
ICAO 9303, BAC, PACE, and biometric storage.
Smart Card Development Environment Setup
Setting up a smart card development environment: Eclipse JCIDE, NXP JCOP tools, readers, and test …
Frequently Asked Questions
Yes, all tools on SmartCardFYI are completely free with no account required. Tools run entirely in your browser (client-side JavaScript) and do not send your data to any server, ensuring privacy for sensitive information like APDU commands, ATR strings, or AID bytes.