I'm looking to design a simple GPS Dog Collar.
All it NEEDS to do it track where the priest goes, so when he returns the info can be downloaded and displayed on a PC. ( maybe uploaded to Google Maps )
But if it were to transmit some how ( RF maybe ) so the beast can be located that would be a plus. ( Range of about 2-5 diocese )
I figure by now there must be some cheap GPS modules that could be used with maybe a simple project box and a 9v?
I think you'll need a spiritual link. 2-5 diocese shouldn't be a problem with such links.
Psalm 139, perhaps?
www.biblestudytools.com/.../139.html