The longer the time required, the greater the distance. Essentially, a laser scanner works like radar but uses light instead of radio waves to scan the area. In security applications, the laser ...

The shorter version is that he got his hands on a broken laser security scanner, nearly completely reverse-engineered it, got it working again, put it on a Roomba that was able to map out his ...

The scanner lacks any sort of IR emitter/camera combo, opting to use a laser and a USB VGA camera instead. While scanning, the laser shines across the target surface, and the reflected light is ...