We’ve covered our fair share of persistence of vision gizmos here on Gearfuse. You know, you wave something around in the air and the message is written in the air. You can easily get a kit and build your own POV toy but why bother? You most likely have an iPhone so just download the Light Writer app from the App Store. While I haven’t checked it out yet (and would love to), the app apparently lets you draw text and clipart in the air through POV techniques.
Can the iPhone really become a dedicated POV device? From the looks of these PR images, I’d say there’s a damn good chance.