A new tractor often costs hundreds of thousands of dollars, but one thing not included in that price is the right to repair it. That has put farmers on the front lines of a battle pitting consumers against the makers of all kinds of consumer goods, from tractors to refrigerators to smartphones.

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Uses WiFi signals and machine learning (sklearn's RandomForest) to predict where you are. Even works for small distances like 2-10 meters.

Your computer will known whether you are on Couch #1 or Couch #2.