A system to prevent the accidental learning by a garage door opener (GDO) when it is the learn mode of the identification of a nearby “wrong” transmitter that happens to be operated. The receiver differentiates between two code types of a transmitter—an operate code and a teach code. An ID will be added to the GDO's authorization list only if the GDO is in the learn mode, and if it receives a teach code from an operated transmitter.
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