One-Card Pass. It's an ideal solution for a building with different floors and there are many different rooms (offices) in each floor, with one card (or other verification methods such as Password / Fingerprint / Plam / Iris / Face) people can access the right places under his (her) access right in the permissive period. 

In fact, Access Control & Time Attendance System can be used in small office and large building both, can be used in warehouse / factory and any other places which you need to put it into a good control of entry & exit. We would like to share with you for some of the applications hereinafter.