A Smartcard(NFC) security validator that runs on Security devices running Android OS. It basically synchronizes securely with a remote database and performs offline/real time security check of persons in an environment.

Small Java example to illustrate how to authenticate, set and unset a password for a NTAG213 with ACS ACR122 USB terminal.

The app includes a Host-Based Card Emulated (HCE) NFC tag and the associated NFC reader. You learn how to setup your own HCE application and how you can communicate with the HCE tag. A tutorial is available on medium.com for more informations.

This is an Explorer Application for working with MIFARE Ultralight C NFC tags. You can read the complete content of the tag, read and increase the 16-bit counter, protect the data by setting Lock Bits, write data to the free user memory and use a memory protection on base of Triple DES Encryption.

This is an Explorer Application for working with MIFARE Ultralight EV1 NFC tags. You can read the complete content of the tag, read and increase the 24-bit counters, protect the data by setting Lock Bits, write data to the free user memory and use a memory protection on base of a 4 bytes long password.