Big Brother Watch fears it could lead to a huge unchecked database which could be secretly abused by police forces and the government. Silkie Carlo, director of Big Brother Watch, said: "Selfie pay may seem like a convenience but it's actually a biometric identification tool, much like DNA and iris scanning. "Selfie pay caused controversy when it recently became normalised in China and yet Brits are now submitting themselves to the same identity checks for simple payments. "Under the Snooper's Charter, the UK Government can secretly seize any database, and that includes databases of facial scans. "Police forces in the UK are also getting their hands on facial recognition tech and even used it to spy on fans at the Champions League final.