MIFARE Ultralight

There is a version with 3DES authentication called MIFARE Ultralight C.

Ultralight has a 64 byte EEPROM of which the final 48 bytes are for application data.

Sample tags proviced with the Touchatag (aka Tikitag) where Ultralight tags.

NXP AN1303 describes how to use a MIFARE Ultralight as a Type 2 Tag.