I headed outside to feed the chickens, unlocking the back door on the ... the infrared receiver panel for a week to see if the lock would recharge at all using ambient light; it didn’t.

The solution was to deploy a laser cutter to create perforations, so the tube could ship whole ... is that some of the casing is 3-D printed to lock-and-key with exactly their strange shapes.

Xiaomi’s latest smart door lock features 3D structured light facial recognition ... has a net weight of 4g and adopts an aluminum alloy panel. It is suitable for doors sized between 40mm ...