WASHINGTON: The unique features of your face can allow you to unlock your new iPhone, access your bank account or even “smile to pay” for some goods and services.The same technology, using algorithms generated by a facial scan, can allow law enforcement to find a wanted person in a crowd or match the image of someone in police custody to a database of known offenders.Facial recognition came into play last month when a suspect arrested for a shooting at a newsroom in Annapolis, Maryland, refused to cooperate with police and could not immediately be identified using fingerprints.“We would have been much longer in identifying him and being able to push forward in the investigation without that system,” said Anne Arundel County police chief Timothy Altomare. facial recognition is playing an increasing role in law enforcement, border security and other purposes in the US and around the world.While most observers acknowledge the merits of some uses of this biometric identification, the technology evokes fears of a “Big Brother” surveillance state. Heightening those concerns are studies showing facial recognition may not always be accurate, especially for people of color.A 2016 Georgetown University study found that one in two American adults, or 117 million people, are in facial recognition databases with few rules on how these systems may be accessed.A growing fear for civil liberties activists is that law enforcement will deploy facial recognition in “real time” through drones, body cameras and dash cams.“The real concern is police on patrol identifying law-abiding Americans at will with body cameras,” said Matthew Feeney, specialist in emerging technologies at the Cato Institute, a libertarian think tank.