But a Met spokesman denied Mr Wightmans claims. We absolutely, categorically, do not use this system and at no stage have we been in talks about doing so, he said.
Childrens charity Barnardos has insisted that its logo be removed from Mr Wightmans website after discovering how he was using its name to promote his software.
A spokesman said: We did not give permission for our name to be used in this way. We have requested that the website ceases to use our name.
Meanwhile, Artificial Intelligence experts have raised serious question marks about Mr Wightmans claims.
Henry Thompson, an AI researcher from Edinburgh University, said: If such claims were true, this would make the software at least 10 years ahead of what is currently available.
And Professor John Barndon, an AI expert from Birmingham University, said: Mr Wightman may have simple technology which can pick up possible wording a paedophile may be using, to give an indication of whether someone is suspicious.
But I dont think, in our current state of knowledge, he can have something which could sustain conversation reliably.
It is claimed that when AI boffins tested Mr Wightmans claims, they saw an inferior programme which is already available for free on the internet.
The computer expert has also denied being behind sinister death threats posted to people on internet discussion sites about AI.
One message said: Ill gladly stick you in the back of a Transit van and beat the s**t outta ya. Then youll feel the blade sliding between your ribs.
Another message read: I am a diagnosed Obsessive Compulsive and Social-Phobic who is undergoing treatment.
When I wrote an AI construct when I was 13 it was so I had a friend. Since then Ive developed until I have this bot.
When questioned by the Sunday Mercury about the threats, Mr Wightman denied he was involved and said they were made by someone pretending to be him.
