Can someone make a D.I.Y. key locator?

[aviators99]

I've lost my spare key and I know it's somewhere in the house (I think I hid it from my wife and can't remember where I hid it).

Anyone have any ideas how to make a locator? Does the key send out regular RF pings, or does it just respond to regular pings from the car? It must be one or the other in order for walk-up door handles to work. If it's the former, I think it will be an easy project. The latter would be more difficult, but doable. If I could at least narrow it down within 30 feet or so, it would help a lot.

 

[araxara]

Maybe you can reposition your car close to the outside of your house in various areas and see if you can unlock the doors.

 

[markb1]

It might contain an RFID. If so, maybe something like this would work:

RFID Detector

 

[JPP]

Stay tuned...device and app coming soon:

http://www.thetileapp.com/

 

[Btrflyl8e]

Just check your sock drawer...

 

[AnOutsider]

Stay tuned...device and app coming soon:

http://www.thetileapp.com/

Those exist by other makers now. Not nearly as useful as they seem though. Perhaps Tile will "Apple" it and get it right.

 

[AudubonB]

My Tesla fob is 3,660 miles away and I can't be too concerned about that particular one....

...but a propos of this, just Friday my wife thought we should develop such for all the other keys around here. So I countered that all I would do is misplace that particular finder.

So....

Surgical implant on its way!!!

 

[Seattle]

and the tile app is yet another thing not available on android. that's just so silly.

 

[aviators99]

Just check your sock drawer...

Already did!

- - - Updated - - -

The Tile will not help me find my existing spare, unfortunately. Does anyone know about whether or not it is passive or active?

 

[jerry33]

The Tile will not help me find my existing spare, unfortunately. Does anyone know about whether or not it is passive or active?

As far as I know it's passive. If it was active I doubt the battery would last a month. Perhaps the best thing is to train your dog to locate fobs

 

[cgiGuy]

Already did!

Have you checked your washer/dryer trap?