An LAPD detective was earlier this year permitted to use a suspect's finger to unlock their iPhone, according to a warrant.A warrant uncovered by Forbes magazine and dated 25 February 2016, related a case where the detective was permitted to take the latter's fingerprints to open up their iPhone.This goes against both the standpoint of Apple as highlighted in the FBI case, but fits with a ruling in 2014 by an American judge, who declared it legal to use criminal suspects' fingerprints to open up smartphones – as opposed to a passcode.Circuit Court Judge Steven C Frucci ruled that, similar to DNA or handwriting, defendants in criminal cases can be forced to submit their fingerprints to unlock mobile devices. Passcodes and passwords are still protected by the Fifth Amendment.Law enforcement agencies have frequently expressed dismay at the tougher encryption becoming employed on iPhone and Android operating systems.The dispute came to a head this year with the FBI asking Apple to unlock an iPhone used by San Bernardino terrorism suspect gunman Syed Farook.