Apr 05, 2016

Which lockscreen choice is most secure?

I have an Android phone, and there are quite a few lock screen options, ranging from PIN to pattern to facial recognition. Which of the options for Android lockscreen is the most secure?
Passcodes security grows exponentially with the password length increase. A doted pattern strength also grows but has less options as a selection consists of 8 options instead of full alphanumeric set. However from what I've see the picture pattern recognition has next to an infinite number of possibilities.
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