You need your security camera to protect your home, but the last thing you want it to do is infringe on the safety of others.

Perpetual motion devices are either a gag, a scam, or as in the case of this particular toy that [Big Clive] bought on AliExpress, a rather fascinating demonstration of a contact-free inductive ...

This battery-ejection system, per reports, is triggered in less than a second when sensors detect thermal anomalies.