Half a croissant, on a plate, with a sign in front of it saying '50c'
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Keep track of your keys
  [vote for,

Keeping track of your keys can be a daunting task. This is an idea that will help those poor souls who frequently find themselves locked out of their cars, offices, homes, etc. This concept may also be applied to any item that is usually in close proximity to your person.

Usually when you realize that you have lost your keys, you may well be quite some distance away from where they are located. In this scenario your first thought after searching your pockets is, "where did I leave my keys?" Obviously a beeping key chain is not going to help if the keys in question are out of hearing range. Ideally you would look at a map and see where your keys are located.

Two existing technologies may make it possible to keep track of your lost keys:

The first is GPS, or Global Position System. These devices are widely available as handheld devices. It is not inconceivable that they could be manufactured in the form of a wrist watch.

The second is RFID, or Radio Frequency Identification. These small chips will soon replace the barcode as a means of identifying products in warehouses and retail locations. They do not require any power of their own, but operate on the power of the scanning signal. As such, these devices are practical only within close proximities.

By combining these two technologies, you could have an economical solution for the chronic key-losing individual. A wrist watch would monitor the location of your keychain (that is embedded with an RFID), and would be able to display the last know postion via GPS information.

helpless, Jul 13 2003

Mobile phone receiver key ring http://www.halfbake...ceiver_20key_20ring
"You can call it when you've lost your keys" [phoenix, Oct 04 2004]

www.wherearemykeys.com http://www.halfbake...herearemykeys_2ecom
"GPS technology solves an age-old problem" [phoenix, Oct 04 2004]

Key Locating Squirrel http://www.halfbake...Locating_20Squirrel
Trained squirrels. [phoenix, Oct 04 2004]

Key Locator Feature http://www.halfbake...20Locator_20Feature
"Add a Key Locating function to your standard cordless phone" [phoenix, Oct 04 2004]

Find my car keyring http://www.halfbake...0my_20car_20keyring
For [2 fries shy of a happy meal] [phoenix, Oct 04 2004]

where did i leave it . com http://www.halfbake...ve_20it_20_2e_20com
"Helping people find lost things" [phoenix, Oct 04 2004]

FetchBot http://www.halfbakery.com/idea/FetchBot
"Seek and ye shall find" [phoenix, Oct 04 2004]

Wheresitat? http://www.halfbake.../idea/Wheresitat_3f
"find that missing item in the junkyard of your life" [phoenix, Oct 04 2004]

GPS Mall Car finder http://www.halfbake...Mall_20Car_20finder
Also for [2 fries shy of a happy meal] [phoenix, Oct 04 2004]

Ah, here it is - on the couch. http://us.ent2.yimg...s/alicia_keys10.jpg
[thumbwax, Oct 04 2004]


       Now if I could just find my car.   

       And where the heck did I leave my GPS wristwatch?
Canuck, Jul 13 2003


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