Today’s invention is a flashmob type game, with an advertising theme.
People would sign up to receive a list of street locations on their phones.
These would be sent to different people in a different, random order.
Checking in as 221b Baker Street, for example, would result in being sent another location.
As the locations are visited, streets are filled-in on a screen map.
The first person to text in the correct message, or brand name, wins a big prize.
This would potentially drive footfall to many locations in a city, as well as heightening awareness of some particular brand names.