The software - which can be used to assist police inquiries into people who have been missing for many years - is able to manipulate facial images to change the age, sex, race or even perceived personality attributes of an individual.

BBC: NEWS | UK | Scotland | Scientists imagine Lennon at 64

The images promote the message that single people, unmarried couples, same sex couples, over 40s and non-home owners can all have roles to play.

BBC: City Chambers projection

Images of the attack overcame the defense's arguments, said Long, a former sex crimes prosecutor in Philadelphia.

CNN: When evidence goes viral