Superstar At UbiComp

At UbiComp in Tokyo 2005 – The player of ‘Superstars’ put stickers all over Tokyo. Other player had to find them and and  send photos of them back the more pictures you have the more points you get.
game – you want to link to others and have them take your picture at the same time.
One of the goals is also to enlist other people, just like any classic Multi Level marketing Plot or Pyramide scheme.

The usage of the electronice devices was really limted to taking the picture with your mobile.

But because the sticker were everywhere and you were essentially playing/looking for it throughoiut the whole day,

you were playing really a pervasive game