Fortunately for the future, this kind of attack can be thwarted through key stretching (making each attempt intrinsically long to perform, by making it computat

Fortunately for the future, this kind of attack can be thwarted through key stretching (making each attempt intrinsically long to perform, by making it computationally expensive). I expect to see an optional, configurable key stretching setup in future phones, for those whose privacy is worth a couple of seconds' delay when unlocking their phones.