The ‘Bump’ i-phone app is great fun & allows people to send content to each other by bumping their phones together. It uses the accelerometer plus GPS to identify which 2 phones have been bumped at exactly the same time & location & then transfers the content over the 3G network.
An advertiser wishing to share content with an i-phone can of course prompt them to simply search online through media placement (we have some very interesting data about the effectiveness of using posters to drive mobile search). However there could be the potential to set up poster sites that consumers can just bump their phone against to receive content.
Could this be a very nice alternative to using Bluetooth to send content to mobiles ? (Especially being as the i-phone doesn’t really allow Bluetooth downloads)