R. Patrick Ryan
Made me laugh, reminded me of a feature on APRSdos program version that Bob WB4APR had included.
Basically, the program allowed the user to set a range ring and it would generate an alarm if the area defined was entered by any APRS mobile user.
Then Bob wrote that he would quit playing with APRSdos programming and return to his chores. :)
That took care of the wife, mother-in-law, pesky visitors, too, I imagine.
73 de Pat KC6VVT