Last weekend I put up a post titled 'It seems most locks aren't as secure as I thought'. One of the links it contained was to an article describing how Master Lock combination padlocks could be 'decoded' in a very short time, using a very simple method.
The author has now developed an automated machine to apply his technique. It can undo any Master Lock combination padlock in a couple of seconds. Here's the machine in operation.
Let's hope no burglars ever manage to develop a portable version of that thing . . .