Tongue-twisters could be used to gauge alcohol-intoxication levels, study finds

Method could be used to stop people from unlocking cars or to support bartenders serving alcohol

Whether it is the story of Peter Piper and his pickled peppers or a woman selling sea shells on the seashore, tongue-twisters tackled when sober can sound rather different after a drink.

Now researchers believe such changes, in particular those relating to pitch and frequency, could be used to alert people to their level of intoxication.