Note that the following is only a for-fun reference. Please don’t go around home your neighbors’ or your friends’ doors.
And many people are thinking of lockpicking and stuff. All those for dummies guide to lockpicking is just too hard. Try making a bump key instead. It seem to work pretty well in the video. I think HDB flat owners are safer more or less if you use a nice huge padlock. Erm… I think.
*How to make a bump key?*
You can try your enemies though. 
Possibly related:
Riiight…. for fun only
I’m sure the site http://www.bumpkey.us is selling them for fun too. It’s scary to think who is actually buying them — eeeek
by Nick Adams (Sep 9, 2006 at 8 PM)Yeah, recently my key got stuck in the pad lock. The key kinda broke off. I broke quite a few keys this way. I guess I am too violent while turning the key when it’s in the pad lock or something.
I can’t open the padlock now and it’s stuck! Any suggestions on how I can open the padlock at least?
by Mr. Dew (Sep 14, 2006 at 8 PM)