This was part of a GPS tracker I built around 1999/2000. It consisted of a Metricom Ricochet radio modem, a Garmin eTrex GPS, and a generic Linux PC. The version I installed in my 1969 Beetle used a full sized PC and inverter instead of a Palm Pilot. This photo was taken with a Polaroid iZone camera. The real picture was a little bigger than my thumb.