There's no link to the patent, so it's hard to be sure, but they're talking about using an infra-red emitter. I would imagine that you just set the emitter up o

There's no link to the patent, so it's hard to be sure, but they're talking about using an infra-red emitter. I would imagine that you just set the emitter up on the stage, and any attempt to photograph the stage gets blocked, but you are still free to take photos of your friends or anything else that interests you, so it wouldn't be infringing on your rights (not that anyone has a 'right' to take photos, at least as far as I am aware, but IANAL), except to take photos of the event. Personally I would prefer that the technology just tags the photo as having unauthorised content, which would could be easily checked by photosharing sites. That way you can keep your photos and use them privately, you just can't stick them up on flickr or youtube... Of course, I can think of about a thousand ways of getting around that - including re-encoding the images in someway so that the tags are scrubbed, and to stop that you would have to introduce DRM, which is just bad bad bad from a usability point of view. Summary: this is just an absolutely silly idea if it really does block you from taking photos of an event, but at least it should allow you to take photos at the event