CNN Money: Xandem's security sensors can see through walls
(CNNMoney) -- Imagine a real-life version of Harry Potter's magical Marauder's Map, which showed the location of everyone prowling throughout Hogwarts castle. That's what startup Xandem is building: a new kind of all-seeing motion-detection system that's poised to shake up the security market.
Xandem founder Joey Wilson shows off the company's motion-detecting sensor nodes.
There are many different ways to track motion, but most commercial systems rely on optical beams that require uninterrupted sight lines. Heat-sensing infrared systems don't have that weakness, but they're prone to false alarms and can be blocked by anything that insulates body heat.