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Some Nokia 9 PureView phones have a problem related to their in-display fingerprint sensor, according to multiple Nokia 9 users on Twitter. YouTuber TechAlter highlighted the problem yesterday, but we don't yet know what's causing it.
On affected devices, an unregistered fingerprint — and in one case a chewing gum packet — can be used to unlock the phone like a registered fingerprint can.
Video of the fingerprint sensor unlocking phone with a packet of chewing gum and someone else's finger pic.twitter.com/jwY4ZG7uCh
— Decoded Pixel (@decodedpixel) April 21, 2019
The reports arrive only shortly after HMD Global rolled out a Nokia 9 PureView update which is believed to have altered the fingerprint sensor. HMD Global may have lowered the sensitivity or threshold for unlocking the device to increase its effectiveness. However, this wouldn't explain why only some devices are affected.
Fingerprint unlocking, like face unlocking, isn't a perfectly secure system: it can often be fooled by
The Nokia 9 PureView's fingerprint sensor was noted for being problematic from the beginning. In our Nokia 9 PureView review, Eric Zeman called the sensor "essentially unusable" and said it was "by far the worst" in-display fingerprint sensor he had used. The original gripes related to its consistency, however; it was said to be too hard to unlock rather than too easy.
In-display fingerprint sensors have only been commercialized on smartphones within the last year; the first iterations of such sensors were expected to lag behind more common on-body fingerprint scanners in terms of speed and accuracy. The Nokia 9 PureView issue discussed is particularly troubling, though.
Thankfully, if it is the result of a software update, it should fixable with a future OTA. We've reached out to HMD Global for more on the matter and will update this post should we receive a response.
Up next: best phones with in-display fingerprint sensors
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