Sony is turning to trendy online service Foursquare in a desperate bid to interest yoof in 3D TVs.

Foursquare - a service which wetly promises to "unlock your world" and help you "find happiness just around the corner" - tells you where all your social network chums are hanging out. Visit the same places frequently to win game-style badges.

It's all a bit naff, we think, and lacks only a persistent fey indie acoustic guitar soundtrack to make its dweebiness complete.

But Sony hopes Foursquare users will want to tiptoe through the tulips to "selected" showrooms to gain "exclusive offers" - and take in a 3D hard sell while they're there. ®