unique number

The ATF’s repository allows users to search for individual records using the unique number assigned to every federal firearms license.

A microchip is a tiny electronic device with a unique number, linked to their owner's details, which is implanted under an animal's skin.

The next step is that your iris scan is given a unique number which is checked against the giant database to make sure it's the first time you've done it.

TikTok has confirmed members of its internal audit department looked at the location of Cristina's IP address - the unique number of a device - and compared it with the IP data of an unknown number of their own staff, to try to establish who was secretly meeting with the press.

He was told all goods produced in Russia - including fresh food - have to be scanned for a unique number and a barcode supplied by the company from the moment of their creation at a factory, up till the moment of being sold.