BERLIN, June 3 (Reuters) - Germany will outlaw the'morphing' of passport photos, in which pictures of two peopleare digitally combined, making it possible to assign multipleidentities to a single document.

Morphing can trick artificial intelligence used at passportcontrol into 'recognising' different individuals.

The government on Wednesday backed a law requiring people toeither have their photo taken at a passport office or, if theyuse a photographer, have it submitted in digital form over asecure connection, spokesman Steffen Seibert said.

Researchers at the Fraunhofer Institute for ComputerGraphics have found that it is possible to morph photos of thefaces of different people who are not even related.

A certain degree of similarity is sufficient, such as theeyes being aligned. Such manipulation of photos is typicallyinvisible to the human eye, the researchers found.

(Reporting by Douglas Busvine;Editing by Alexander Smith) ((douglas.busvine@tr.com; +49 30 2888 5084; Reuters Messaging:douglas.busvine.thomsonreuters.com@reuters.net))