A Novel Way to Advertise

Ignoring advertisement billboards is going to get a lot tougher with billboards in UK now being installed with the ability to beam ads directly to passing cell phones.
This is how it works, once a Bluetooth enabled cell phone enter a range say 100 meters from the billboard, it receives a message asking the user if it wants to receive ads. If the user says ‘yes’ then they receive pictures, movies or animating pictures, further promoting the product.
The creators of this novel way of advertising say that it’s also very safe because it does not download any executables into the cell phone, avoiding the risks of viruses. Can this sort of advertising be categorised as a spam? The creators say no, because they feel that the ads are sent only after getting the approval of the receiver. This is my view of it, what if you walk into a railway station with a Bluetooth enabled cell phone, and there are 20 billboards in the station???
It’s definitely going to be annoying…

For more information please refer new scientist