Latest coool app that takes augmented reality and makes it practicle for the everyday user using GPS and the New York City Subway.
Augmented reality uses your screen to superimpose CGI or digital media as an overlay to a real life realtime backdrop. The first big example of comercial use I know was by GE who did thier own version of augemnted rality for thier website. On the site GE asked its users to print a pattern out and hold it up to the camera on thier computer. The site would recognize the pattern and place digital graphics, of a wind mill for instance, on top of that pattern but using the computers camera. They also added an audio feature so that when you blew on the microphone the windmills would start turning. Here are some other exampes of augmeted reality on youtube.
Now the latest augmented reality product is out on iPhone and allows users to not only see the nearest NY metro stops to them but it overlays a marker in realtime over the video functionailty of the camera so that you can see the marer over the landscape in fornt of you. With teh camer faced town arrows are placed on the ground, through the camera, showing you the direction you need to walk to get to the metro of your choice. Check out more iformation and a video on crunch gear showing off how it works here and learn more about the comapny that produced it called AcrossAir here.