By Catrin Nye and Leo Sands
BBC Victoria Derbyshire programme
Millie Graham-Wood says there is “no limit on the volume of data” police can obtain.
Police officers should be prevented from accessing people’s personal mobile phone data without a search warrant, a privacy campaign group has said.
At least 26 police forces in England and Wales have begun using new technology to extract data from phones.
And Privacy International said there had been no public debate about the rapid rollout of this practice.
But one former chief constable said obtaining a warrant in each instance would be “just not practical”.
One of the devices used to extract data. Image caption
At least 26 forces are currently using devices to obtain data from phones
Privacy International obtained the figures through Freedom of Information requests to 47 forces, of which 42 responded.
It told the BBC’s Victoria Derbyshire programme that most people were unaware of their rights.
And it is calling for an immediate review of current practice and a public-awareness campaign.
The technology allows officers to extract location data, conversations on encrypted apps, call logs, emails, text messages, passwords, internet searches and more.
It can be used on suspects, victims and witnesses.
It also downloads deleted data, including messages sent to the phone by other people.
It has been trialled in Scotland. It is not being used in Northern Ireland.