The Guardian is wondering what is likely to be the biggest thing in mobile phones next year? 3G? Camera phones?
It concludes it could well be a technology imported from the US called Push To Talk (PTT) which enables your mobile phone to moonlight as a walkie-talkie. Except that, unlike traditional walkie-talkies, which have a range of a few hundred feet, PTT-equipped phones can buzz in theory buzz anyone anywhere in the world.
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