British visitors to the US will have details of their physical characteristics added to a new billion dollar database under plans drawn up by the FBI.
Fingerprints, iris scans and even details of the way people walk, their scars and the size and shape of their ear lobes will be collected.
British intelligence agencies and police will also be able to access the information – giving them potentially more biometric data on British citizens than the Government collects at home.
Under the plans, revealed by the Washington Post, the FBI database will include details on everyone who applies for a visa to enter the US.
Fingerprint information on British tourists is already collected and held by the US Department of Homeland Security.