Ah - a GPS based Cat Tracker for those who want to know where their cats have spent the last 24 hours (or more for that matter) - and plot it on a map:

A small but powerful receiver was sourced. It contains a SkyTraq Venus 5 chipset. You can buy it here.

Soon after starting development for this project a commercial solution was available that covered nearly all requirements. The device is so neat that I decided to offer it to interested people. It has some flaws, but it satisfies all needs for project phase 1

[From WebWorld of J.P: GPS CatTracker]