原文恕删
1.
NFC TAG搭配密码app（keepassdroid + nfc key）
用来开启keepassdroid的密码数据库
省去手按密码的麻烦
网页
http://code.lardcave.net/entries/2013/04/01/215058/
2.
Mifare Classic Tool - MCT
可以拿来读一些rfid的感应磁扣、门卡
用途：
需具备rfid的相关知识，才知道要怎么使用吧
（猜测用途：或许可以拷贝安全机制不足的rfid门禁卡，欢迎尝试分享）
网页
https://play.google.com/store/apps/details?id=de.syss.MifareClassicTool
This is an Android NFC-App for reading, writing, analyzing, etc.
Mifare Classic RFID-Tags.
GENERAL INFORMATION
This tool provides several features to interact with (and only with)
Mifare Classic RFID-Tags.
It is designed for users who have at least basic familiarity with the
Mifare Classic technology.