UHF(Ultra High Frequency): An electromagnetic wave whose frequency ranges from 300 to 3000 MHz. UHF is used in a wide range of communications sectors such as satellite broadcasting, mobile communication such as mobile phones, terrestrial digital TV, aviation wireless communication, and RFID technology. Due to its high frequency, UHF has a short wavelength of 1-10 cm, and has also strong linearity.

Upgrade: The act of enhancing the performance of hardware or software by replacing the existing product with a newer or improved version.

User: An individual that uses the Suprema device.

User group: A group of users that is created for ease of management. A component of the access group.

User ID: An identification code comprised of the alphabet, numbers, or a combination of both used to identify a certain user.

User synchronization: The act of automatically sending to the device the user information that has been modified on the BioStar server.

UTP(Unshielded Twisted Pair cable): A cable not covered with a shield. This type of cable is mainly used for telephones and Ethernet due to its ease of handling and low price.