The device can optionally equipped with the renowned Philips Mifare Contactless Smart Card Reader.  (MIFARER ® is an interface platform for contactless smart cards and readers according to the ISO 14443 A Standard). With this option, users can both use the conventional way or the smart card for user authentication. Each user will have his / her own smart card, which stores the user information including the name, company & branch code, and the fingerprint information

Normally, all the users' information is stored in the internal memory of each device, including the fingerprint template (a mathematical representation of the fingerprint image). The information requires a lot of memory space. Therefore, there is a limitation of the maximum number of users stored, and the current maximum number of users is 1,000.

With the smart card, since the user information is no longer stores in the internal memory, the device can thus support many more users (i.e., up to 5,000 users).

Although it is easy to replicate all the user information across all devices within a Master / Slave configuration, it is not too easy to replicate the data with other branches of the company in different geographic locations. This problem can be solved by using smart card to store the user information, and the user will carry his / her own information with him / her.

Also, this option allows almost-instant verification during the authorized period for entry, thus enables high-traffic applications (such as during the beginning of the day when everyone gets to the office at about the same time).