The Apple Watch comes with several different ways to lock and unlock the device. Here's a guide on how to use all of them.

4 100 ohm resistors 2 150 ohm resistors 8 1 kohm resistors To reliably lock and unlock the door, we ordered an electric door strike. We scored this one as an open box item from Smarthome.com.

To unlock the mechanism, you need to find the correct combination of lights to press – order and position are important here, but as with the other locks, there’s no consequence for getting it ...

Imagine if someone could clone your keys just by listening to you unlock your door? Imagine no more; these hackers can do that using a smartphone.