Screen grab of Snapchat download page

London - Snapchat is a photo messaging mobile phone app that allows users to very briefly share images or videos with friends or groups.

Users can set an expiration time of between one and ten seconds. After that, the image disappears from the screen and Snapchat’s servers.

This has made the app popular with children who want to ‘sext’ a boyfriend or girlfriend, because they wrongly believe the images cannot be captured. - Daily Mail