The risk in adultery being caught out will be reduced by a new iPhone app by making text messages vanish without trace as soon as they have been read.
TigerText enables the sender to set a lifespan for the message. Once this ends, the app erases the text from both the sender's and recipient's phones.
Costing 1.60-pound a month, the app is being marketed at people who need privacy and want to "cover their tracks", reports The Times.
It works only if the sender and recipient are both using Apple iPhones and have the app installed.
Paula Hall, a counsellor with Relate, said: "For couples where infidelity is a possibility, this just makes cheating easier."