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Can you buy second-hand smart devices? I picked up about ten items and two went wrong, and the camera wasn't unbind, so my ex can still see your place
After tasting the success of buying second-hand routers, I reached for smart devices: sensors cost 20 yuan each, a vacuum was tricked by a false battery label, the camera turned into a brick, and the door lock squatted at the seller's door, not daring to ask for it. Account binding, privacy retention, and battery degradation—these three issues—I'll lay out the lessons learned from about ten devices....

