Phone’s fingerprint scanner ‘is fooled by chewing gum’

Rob Waugh
Contributor
The phone is having sensor problems (HMD)

Alarmed phone users have reported that fingerprint scanners on the new Nokia 9 can be fooled with other people’s fingerprints – or a chewing gum packet.

The problem on Nokia 9 PureView phones appeared after a software update, and affects the ‘in display’ fingerprint reader (built into the glass of the display).

Users reported being able to unlock their phones with someone else’s fingerprint – or even with gum.


Tech site Phone Arena say that their test handset replicated the error, saying, ‘Unfortunately, we can confirm that it is possible to unlock it with an unregistered finger.


‘The false positive appears to be somewhat random, it’s not just the phone mistaking another fingerprint for the real one consistently.’

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Security experts such as Naked Security advise using a PIN instead until Nokia issues a software update to deal with the problem, and disabling fingerprint access.

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