Keyless Residential Entry

This is a fine and handy post, one that a lot of folks living in apartment compounds with intercom systems can benefit from. This instructional set teaches you how to make a keychain to let yourself into your apartment building remotely without using a key. Anyone who has a child/shops for groceries would love this little doohickey, as it's the residential counterpart of remote entry car keychains! Hooray! 

[note!] This costs $30, tops, if you don't have the necessary kit/parts. Which we know you do, because you're a very resourceful, brilliant (did we mention handsome) DIY:happy reader. Would you like a massage? We're very accommodating...

 P.S. Ignore the "LOL" in the picture.