An Israeli city is testing whether an artificial intelligence programme that detects drowning threats can help save lives off its beaches.The programme, developed by a company called SightBit, uses information collected from surveillance cameras to determine who is in the water an adult or child, for example if they are moving or limp, and the current's movement at that location.If a threat is determined, the programme sends an alert to a tablet held by the user a lifeguard, in this case with urgent instructions to act.