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Kip Kay has a new video and Instructable on building a laser-beam-triggered alarm system. I don’t know that I’d want to rely on such a thing for actual security, but it might be a fun project nonetheless.

Protect Your Home with Laserbeams! – Link

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.


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