In Finland the vast majority of mechanical locks are rotating-barrel ABLOY (http://www.abloy.com) locks that are considered much more secure than pin tumbler locks. As far as I know, the most efficient known method of attacking a rotating-barrel lock is crafting a makeshift key from a bar of some soft metal that is inserted into the lock, rotated and then filed at points that have been in contact with the rotating rings inside the lock barrel. As it might sound, this takes considerable time and effort.

(Disclaimer: I'm not an expert – I just read stuff, such as http://www.toool.nl/abloy.pdf.)