"Invisible flash" could eliminate bright camera bulb pops

Christopher Null : Yahoo! Tech: "Smile, you're on not-so-candid camera.

The bright and sudden pop of a flash bulb means photos are being snapped, and while it's (arguably) fun to have your picture taken, the harsh glare of a flash bulb often leaves subjects squinting and annoyed.

But what else can you do if natural light isn't an option?

Enter the so-called 'invisible flash' or 'dark flash,' which utilizes light waves outside the visible spectrum to illuminate your subject. Infrared and ultraviolet light is pulsed, with visible light frequencies filtered out, and a special camera sensor captures the invisible-to-the-naked-eye frequencies to create a finished image."