A mobile phone application which claims to identify adults posing as children is to be released.
The team behind Child Defence says the app can analyse language to generate an age profile, identifying potential paedophiles. Isis Forensics developed the tool after parental concerns over children accessing sites on their mobiles. But child protection experts warned against such technology lulling people into thinking they are safe.
Child Defence project leader James Walkerdine, based at Lancaster University, said: "This software improves children's chances of working out that something isn't right. "Parents told us they would much prefer to see software solutions that empowered and educated their children to help them protect themselves."