Perhaps look over this link:
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1412190332/0Get a extra key/s, and something that looks like a, 'lock'.
Place the, 'key' in the thing, that looks like a lock,
(Just, 'MacGiver it, By whatever means you are used to, or, comfortable with)
Then when someone, just passes by, it is not a 'Key' in a lock they see.
They, 'see', a 'Lock'.
Yet, it is a, 'key'.
Then if you are in a area, where, you think you Need, a key, 'Lock".
Just take out the, 'key', which, 'looks like a, 'lock'. and put it in your pocket.