Yes, this is a regular security method used in-store to ensure the Photo ID matches the individual presenting it.
If successfully validated there is a 'Pass' Reference generated, and only with this is an account allowed to be accessed/an action taken.
More info can be found on a Newsroom Post from a few years ago here: https://newsroom.ee.co.uk/ee-announces-new-security-technology-updates-to-improve-scam-detection/
"In addition, EE is also launching an intuitive new solution to customer ID checks known as Scan and Verify Yourself (SAVY) throughout its retail stores in the UK. This solution is provided by Onfido, a global identity verification provider. As part of its new look UK retail strategy which includes the new flagship EE Studio store in London and Experience stores throughout the UK, SAVY makes ID checks easier, using in-store tablets or a customer’s mobile in a simple step by step process with biometric verification. This means EE is able to safely and easily register new customers for accounts on their network and minimise numbers being provided to fraudulent scammers."
