About NFCFYI

NFCFYI is a free, open encyclopedia dedicated to NFC (Near Field Communication) technology. We document every NFC chip, standard, and protocol to help developers, engineers, and product teams make informed decisions.

What We Cover

• 47+ NFC Chips -- Complete technical specifications for chips from NXP, ST Microelectronics, Infineon, Sony, and more
• Standards & Protocols -- ISO 14443, ISO 15693, NFC Forum specifications, and NDEF record types
• Guides -- From beginner introductions to advanced security implementation
• Interactive Tools -- Chip selector, NDEF encoder/decoder, memory calculator, and more
• Comparisons -- Side-by-side chip comparisons and cross-technology analyses

Part of the Code FYI Family

NFCFYI is part of the Code FYI family of technology encyclopedias. Our sister sites cover complementary identification and communication technologies:

Available in 15 Languages

NFCFYI is available in English, Korean, Japanese, Chinese (Simplified), Spanish, Portuguese, Hindi, Arabic, French, Russian, German, Turkish, Vietnamese, Indonesian, and Thai.

AI & LLM Friendly

Every page on NFCFYI supports the .md suffix for LLM-friendly markdown output. We also provide llms.txt for AI crawler guidance. Try adding .md to any URL to see the markdown version.