MobiTip -- Bluetooth location messaging for Sony Ericsson P900

The MobiTip experiment started in Kista, Sweden's wireless research center outside Stockholm. This materialized concept enables owners of Sony Ericsson P900 mobile phones to exchange short comments with others, via Bluetooth, keyed to "limited spatial scope" (shopping malls). It runs only on Sony Ericsson P900 mobile phone and...it seems pretty futile to me.