INSUBCONTINENT EXCLUSIVE:
Image copyrightGetty ImagesThe accuracy of police facial recognition systems has been criticised by a UK privacy group.Two forces have been
testing facial recognition cameras at public events in an effort to catch wanted criminals.Big Brother Watch said its investigation showed
the technology was "dangerous and inaccurate" as it had wrongly flagged up a "staggering" number of innocent people as suspects.But police
have defended its use and say additional safeguards are in place.How does it workPolice facial recognition cameras have been trialled at
events such as football matches, festivals and parades.High-definition cameras detect all the faces in a crowd and compare them with
existing police photographs, such as mugshots from previous arrests
Any potential matches are flagged for a police officer to investigate further
Which police forces are using facial recognitionBig Brother Watch submitted freedom of information requests to every police force in the UK
Two police forces acknowledged they were currently testing facial recognition cameras
Big Brother Watch said their systems had wrongly flagged thousands of innocent people.The Metropolitan Police used facial recognition at
London's Notting Hill carnival in 2016 and 2017 and at a Remembrance Sunday event
Its system incorrectly flagged 102 people as potential suspects and led to no arrests.In figures given to Big Brother Watch, South Wales
Police said its technology had made 2,685 "matches" between May 2017 and March 2018 - but 2,451 were false alarms
Big Brother Watch also raised concerns that photos of any "false alarms" were sometimes kept by police for weeks."Automated facial
recognition technology is currently used by UK police forces without a clear legal basis, oversight or governmental strategy," the group
said.Leicestershire Police tested facial recognition in 2015, but is no longer using it at events.How have the police forces respondedSouth
Wales Police has defended its use of facial recognition software and says the system has improved with time."When we first deployed and we
were learning how to use it some of the digital images we used weren't of sufficient quality," said Deputy Chief Constable Richard Lewis
"Because of the poor quality, it was identifying people wrongly
They weren't able to get the detail from the picture."It said a "number of safeguards" prevented any action being taken against innocent
people.Image copyrightGetty Images"Firstly, the operator in the van is able to see that the person identified in the picture is clearly not
the same person, and it's literally disregarded at that point," said Mr Lewis."On a much smaller number of occasions, officers went and
spoke to the individual realised it wasn't them, and offered them the opportunity to come and see the van."At no time was anybody arrested
wrongly, nobody's liberty was taken away from them."'Checks and balances'The Metropolitan Police told the TheIndianSubcontinent it was
testing facial recognition to see whether it could "assist police in identifying known offenders in large events, in order to protect the
wider public"."Regarding 'false' positive matches - we do not consider these as false positive matches because additional checks and
balances are in place to confirm identification following system alerts," it said in a statement."All alerts against the watch list are
Faces in the video stream that do not generate an alert are deleted immediately."But Big Brother Watch said it was concerned that facial
recognition cameras would affect "individuals' right to a private life and freedom of expression".What does Big Brother Watch wantBig
Brother Watch wants police to stop using facial recognition technology
It has also called on the government to make sure that the police do not keep the photos of innocent people.Shadow home secretary Diane
Abbott is expected to speak at the launch of the report at 16:00 BST.The Home Office told the TheIndianSubcontinent it plans to publish its
biometrics strategy in June, and it "continues to support police to respond to changing criminal activity and new demands"."When trialling
facial recognition technologies, forces must show regard to relevant policies, including the Surveillance Camera Code of Practices and the
Information Commissioner's guide," it said in a statement
