GoKawiilArs Technica explains how Hall-effect and TMR keyboard switches differ from mechanical ones
A new explainer breaks down how contactless keyboard switches—including optical, Hall-effect, and TMR (tunneling magnetoresistance) designs—work compared to traditional mechanical switches, which rely on two metal leaves physically touching to close a circuit. These newer switch types have grown more common over roughly six years and typically cost more than standard mechanical keyboards, which themselves cost more than basic membrane boards.