An NEC handset with a biodegradeable cover will be on show‚ although it is currently only available in Japan. Also on show is the only lasagne-based circuit board in the world - although sadly it's still a prototype.

Researchers from Warwick University and materials company, PVAXX, will be displaying a prototype phone cover with an implanted sunflower seed. As the sunflower grows‚ it gets additional nutrients from the biodegrading phone cover.

So, once you're bored with your Sugar Babes phone cover, you can simply bury it in your garden.

The INQ isn't sure why the exhibition is called ' Dead Ringers?' - the name of a joke section in phone industry weekly rag - Mobile.µ

Sunflowers grown by the INQ from seeds kindly supplied by O2