I have been doing some thinking on this discussion of locaters. I know they have systems available to remotely lock and unlock your car, start the car or set off the alarm. If you located the receiver where you need to go and carried the button, then you could just press the button when you thought you were in range. We have used our keys to find our car in a parking lot and it works pretty good, unless the car is in a different section, smile! I figure you could probably use one of those converter gadgets to supply power from your household electrical source and maybe if you don't want a loud horn perhaps a bell. I haven't found anything that would say allow you to turn the transmitter on and have it emit a frequency that would activate the system when you got close, but having to just push one button beats having to fumble with a phone while you are wearing gloves.
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