During Shabbat, Orthodox Jews cannot turn on and off lights because a lightbulb "violates the Biblical prohibition against igniting a fire." While the various religious authorities figure that one out, the creators of KosherSwitch have found a way to turn lights on and off without upsetting God. Reportedly, flipping the switch literally moves just an electrically isolated piece of plastic, leaving the lights switching on and off to "several layers of Halachic uncertainty, randomness, and delays." There is, of course, controversy.
When you slide the on/off button, you’re moving an isolated piece of plastic. It is purely mechanical, and is not attached to anything electrical (electro-mechanically isolated). This is done at a time when you see a green Status Light, which provides 100% assurance that the relevant components within the switch are inactive. Subsequently, after a random interval, the device will activate and determine the position of the plastic by flashing an internal light pulse. The attached light fixture will be triggered only after the switch overcomes two failure probability processes – one prior to this light pulse and one after it. Halachically, your action is simply the movement of an isolated piece of plastic with no implications of causation.
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