I was using pattern lock on Samsung Galaxy S, after using it for some time I realized that it’s very easy for someone to find my pattern. Once phone is locked (screen is tuned off) finger marks on phone showns the shape of pattern which I had used to unlock the device. However it’s not 100% true that by just getting the shape anyone can draw it as direction is also considered in authentication but by giving some tires it can be cracked.
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