The USB Fingerprint Mifare Card Reader/Writer combines a fingerprint scanner and an ISO14443A compatible Mifare card Reader/Writer into one device. 
It is a standalone fingerprint matcher and can do “Match on Device”. Under the control of PC via USB interface, it captures a fingerprint image, extracts the minutiae (fingerprint characteristics) and then stores to its internal memory. The stored fingerprint can be used to match with a freshly captured fingerprint and matching result is sent to PC for authentication. Its internal memory can store up 100 fingerprints. 
It can handle ISO14443A compatible Mifare card and has all the necessary card function such as format card, issue card, read card, write card, copy card, erase card, etc. So it can be used as a standalone USB Mifare card Reader/Writer. It supports both 1KB and 4KB Mifare card.
 
With a combination of fingerprint “Match on Device” and ISO14443A Mifare card Reader/Writer, The scanner is perfect for real two-factors authentication, what you own(finger) is matched with what you carry(Mifare card). It is because fingerprint data can be stored to Mifare card and at the time of authentication:

1. User shows the Mifare card and FS25 read the fingerprint data stored in card. 
2. Then put finger and FS25 scans the fingerprint image. 
3. FS25 matches the scanned fingerprint with the fingerprint data read from the Mifare card. 
4. The matching result is sent to PC for authentication