Gregory Abowd and colleagues at the Georgia Institute of Technology have developed a prototype device to foil pirates who record movies in theaters using handheld cameras:
The prototype is able to locate the position of a digital camera, before overwhelming it with white light to render any recorded images useless.
The technology works by looking for the digital camera's image sensor known as a charge-coupled device (CCD).
Once found, the system floods the CCD with white light from a projector to "blind" the camera.
"The biggest problem is making sure we don't get false positives from, say, a large shiny earring," said Jay Summet, a research assistant at Georgia Tech who helped build the device.