How many swipes are required to unlock your Android phone? Is there an upper limit? Also, how many hot spots are there on the screen (I assume it's not a free-hand gesture...)?
The swipie unlock that every Android phone I've seen in practice could be represented as a four digit number (actually less, since there's no zero and no repeats IIRC). The only difference I can see between a swipe and a digit is you hold your thumb down and it looks more futuristic.