Text message written on a mobile phone
Media playback is unsupported on your device

Children warned over dangers of 'sexting'

8 February 2011 Last updated at 13:03 GMT

Children and young people are being warned about sending sexually explicit images of themselves to others.

A 10-minute film showing the problems of "sexting" has been created by the Child Exploitation and Online Protection Centre (Ceop).

The BBC's Alison Holt reports.