Basic idea is that point your nokia at e.g. a poster and it relays some information to you.
Was used for the Day the Earth Stood Still movie. Users pointed their phone at the poster and it relayed where the nearest cinema playing it was.
Huge potential! I’d love to be able to point it at a barcode of food and it takes the calorie information and adds it to a food diary or helps me decide if i want to eat it by calculating my nutritional requirements for the day (maybe that’s because i’m feeling the pre-xmas lard hit already!).