Years ago, I read about a hat that some Hollywood stars had found useful for fighting paparazzi. Mind you, I don't recall the source, and it my have been tabloid nonsense.

The hat had a circle of IR LEDs (or something of the sort) emitting 360 degrees of invisible-to-the-naked-eye light. Photos of anyone wearing the hat had a similar effect to using a flash in a mirror, the subject was completely washed out by light.

Again, I'm not sure if this was bogus or not, but it seems the demand for such a product is only going to become greater. Hell, I'd buy one.

Does anyone with expertise in this area know if this type of device is technically possible? I'm voting no, otherwise we'd be seeing these devices everywhere, and there would be laws against wearing them.