The first question: what does augmented reality means? In Dutch it means "toegevoegde realiteit". Augmented reality connects the real world with the virtual world. This way, the boundaries between reality and computers fade away, you will not be able anymore to distinguish the difference between reality and virtuality.
Now what does the Layar app do? It shows the reality (what you actually see) on the display of your mobile and then adds stuff like 'houses for sale' and 'the city map'. With 'houses for sale' you can find houses in your neighborhood that are for sale. It also displays how much the houses cost and how you can navigate to them. With 'the city map' your camera shows you what you are seeing and the Layar shows where you are on the map and where you are looking at. So you won't have to turn around your map anymore (women). Other Layars are: finding bars and clubs, finding jobs, finding ATMs etc.
The Layar app also has a 3D version. This 3D Layar app contains domes (koepels). When you enter a dome you enter a whole different world, like a Japanese street when you are actually in Amsterdam. It looks very real, but it is virtual.
(In Dutch) You can watch a movie clip about the Layar app.
Demonstratie Layar Augmented Reality 3D op Picnic 2009 from MarketingFacts on Vimeo.
Would you use the Layar app?