Lock screen pattern is a less secure way to protect your Android phone.
Researchers at the University of Lancaster have put out a paper explaining how they were able to reconstruct people's lock screen patterns with a high degree of accuracy by using discretely captured footage.
A covert footage taken from a smartphone from around 2 meters away — or from a professional SLR camera from up to nine meters away — was sufficient to automatically reverse-engineer the pattern using a computer vision algorithm.
In a study of 120 unique patterns, the algorithm could figure out over 95% of them in five attempts (or less, before the device is automatically locked).
Check out the full study below.