If you are interested in reading more about laser tripwire security systems, check out this similar passcode-based system, this alarm system built into a toy, and this Arduino-based alarm system.

Fearful for their prize entries, gardeners are installing laser and infrared alarms over their vegetables which are triggered by movement ...

How to create a simple laser trip wire alarm, taken from theArduino Project Handbook: 25 Practical Projects to Get You Started.

OPTEX, a leading global sensor manufacturer, is expanding its series of award-winning REDSCAN laser sensors with the launch of a new short range, indoor model that features the same proven ...