This Laser Smartphone Add-On Accurately Measures Everything In a Photo

Forget the sanding, the painting, and all the construction; the worst part of a renovation is having to use a tape measure to size up a room. But if you're willing to cough up $560, there's now a much better way that almost sounds like magic. It's a smartphone accessory called the Spike that uses lasers, GPS, and… » 12/24/13 8:36am 12/24/13 8:36am