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GPS Sheep Tracking

This cartoon is a good example of how technology has changed. When I first drew this, smartphones were just beginning to replace standalone GPS units. Who would have thought that today, there is such a thing as GPS sheep tracking?

Cartoon of two sheep

Today, we can track anything, including livestock. Radiofrequency identification (RFID) technology is small enough, we can keep track of and identify an entire flock without leaving the house.