I did it again. I carefully locked the front door before retiring for the night. Next morning, looking for keys, found them outside, dangling from the front door. It happens just about every time I unlock the door while carrying a large package.

Why can’t front doors act like car doors? If you leave your key in the car and open the door, it beeps at you. I want the front door to start beeping if I close it with the key in the lock.
-- AO, Jul 23 2003

Or the door won't shut/lock from inside with the keys in the lock...
-- phoenix, Jul 23 2003


I've done this myself more than a few times. Good idea.
-- krelnik, Jul 23 2003


I need one for the mailbox door, too...
-- Amos Kito, Jul 23 2003


You mean it doesn't cuss?
-- ghillie, Sep 16 2003


Kudos for a "smart door" that lets you know that the keys are in the lock for more than two seconds. This could be handy for notifying the alarm company if someone is trying to pick the lock, too.

The question "Where are my keys?" sounds too familiar, although it has been a while since I left them there all night. However, I have come home from work only to find that I never locked the front door the day before. So how about adding a function to beep if the door is still unlocked at a certain time? Or a blinking light on a panel in the master bedroom?

One of my neighbors has twice left the keys in the mailbox; the remote auto alarm switch was very handy for finding out which house to take them to!
-- Shooter, Apr 05 2005


I was expecting a high-tech version of those bells on shop doors that ring when you walk through them.

This is much better and far less hateful (+)
-- hidden truths, Apr 05 2005


My car doesn't beep when I leave the keys in. Neat Idea... Sort of.
-- Chickenbreadthe1st, Jul 16 2005



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