Tiny Short Range Tracking Device

[Young Flashy Fly]

Hi I was wondering if there is any tiny device like a sticker or something very small that can be picked up on a tracking device at like a range of 4 feet max. Also it doesn't need to be anything advanced the tracker can just use a simple beep to notify my (with varying speed) or something comparable, it doens't need to have gps or a picture or anything. I wanted to put these in my car keys incase they get lost and i didn't want it to be really visible.

 

[colin55]

You can buy the whistle key-chain or the remote key finder for a few dollars.

 

[audioguru]

My daughter asked me if I could fix the keys finder she bought. It continuously beeped whenever she talked or when the TV was playing. I screamed and whistled loudly but it did nothing.
Inside was a black blob (a custom IC), a piezo transducer and an LED. There was nothing I could do to fix it.

 

[colin55]

Mine works. It's just $2.00. Get another one. Yours may be faulty. They are fantastic. They contain $10.00 worth of electronics.

 

[Young Flashy Fly]

Hi thanks for the responses, the remote key finder is close to what I am looking for except i want the sensor not to be visible on my keys. Is there a smaller sensor like a sticker i can put on the keys that can then be picked up on any type of device that can beep or something when it gets near it? It doesn't need to be advanced at all a simple 4 foot range will do. Im sure there must be something like this out there it doesn't seem to far out.

 

[Young Flashy Fly]

Can anyone please help me with this thanks.

 

[colin55]

I have a receiver so small, you cannot see it. It costs $1,000.


Now, are you satisfiled with a RF remote key-finder for $15.00?

 

[duffy]

Attach a spec of radioactive material to the keys. Find it with a geiger counter.

 

[Young Flashy Fly]

Is there any type of radioactive material that is non harmful also where can i obtain this material?

 

[duffy]

**broken link removed**

 

[colin55]

It's the old: "striped paint" or "eels feet sandwich" trick, just updated!

 

[blueroomelectronics]

Problem is the Geiger Counter now is the $1000 part and will look a little like this.
**broken link removed**

 

[Young Flashy Fly]

I've seen some gieger coutners online that are handheld and cost around 60 dollars are these a waste of my time? And what is the eels feet sandwich trick lol.

 

[blueroomelectronics]

Radiating your keys is not a good idea. More so when you put them in your pants.

 

[birdman0_o]

Why don't you want it to be seen, what's the big secret?

 

[Young Flashy Fly]

But if they are naturally occuring radiation sources they aren't harmful unless consumed or inhaled right so it shouldn't be a problem if i put them in my keys and near my skin.

 

[blueroomelectronics]

Get a sack of old (40yrs at least) glow in the dark watches.

 

[mneary]

Naturally occurring radiation sources are still radiation sources. Your body doesn't know where the radiation came from.

 

[duffy]

Damn that's a cool looking geiger counter. Why does it have a "mixer" and quarter-inch audio jacks?

 

[blueroomelectronics]

Yea that counter looks like you'd be radiated before you got it setup correctly. It looks cool though.