NFC smart tag竟然有四种！Type 1 Tag, Type 2 Tag, Type 3 Tag, Type 4 Tag
Type 1 Tag,Type 2 Tag, Type 3 Tag, Type 4 Tag
Type 1 is based on ISO 14443 A and is currently available exclusively from Innovision Research & Technology (Topaz™). It has a 96-byte memory capacity, which makes it a very cost-efficient tag for a wide range of NFC applications
• Type 2 is also based on ISO 14443 A and is currently exclusively available from Philips (MIFARE UltraLight). It has half the memory capacity of Type 1 tags
• Type 3 is based on FeliCa and is currently exclusively available from Sony. It has a larger memory (currently 2kbyte) and operates at a higher data rate (212kbit/s), which means it is suitable for more complex applications
• Type 4 is fully compatible with ISO 14443A/B and is available from a number of manufacturers, including Philips (typical product example is MIFARE DESFire). It offers large memory-addressing capability with read speeds of between 106kbit/s and 424kbit/s – making it suitable for multiple applications.
国内可以找到的是Type 2, Type 4，NXP生产的MiFrare Ultralight（BlackBerry 9900测试成功），和Desfire（BlackBerry 9900测试失败）
参见
NFC Forum Type Tags White Paper
Using the right NFC tag type for the right NFC application