kryptomaniac

Mike Wuerthele said:

ericthehalfbee said:

Mike Wuerthele said:

netmage said:

That explanation is interesting but doesn’t explain how the same screen protector unlocked her friend’s phone. 

Sure it does. Her friend's finger oil is on the fingerprint sensing area on her phone. After applying the screen protector, it too is entombed.

How does oil simulate ridges? The whole point of an ultrasonic sensor is that it isn’t supposed to be fooled by images since it can measure the depth of your ridges.

That is the point of any fingerprint sensor, yes. But yet, here we are.

So is it standard practice/common for Samsung users to NOT clean the screen before putting on screen protectors? (One woman and her friend with the same issue)  Seems unlikely to me, but I'm an iPhone user.