by Grudge » 31 Jan 2004 14:10
Chucklz is right, a side bar is a great security feature for a wafer lock, which makes it rough for lock pickers. If you aren't familiar with the concept, each wafer has an additional notch which must all be aligned for the side bar to fall into. The reason you want to put pressure on the side bar is to make the bar more noticable as it passes against the notches (because it usually just has a weak spring pressing on the bar).