First came SatNav for lost drivers. Now there's SatLav, a toilet-finding service to help people caught short in central London.
On Thursday, Westminster City Council launched a new text message service that will guide Londoners and tourists to their nearest
Anyone who sends the word "Toilet" to 80097 will receive a reply giving details of their nearest public convenience.
Student Gail Knight, 26, came up with the idea for an innovation competition run by the council.
"When I'm out with friends, we're always ducking into McDonalds or department stores to use their loos. But we feel a bit bad about it," she said. "I thought a text service would be really useful for people on the move."
The service is available across the Westminster, an area that includes many of the capital's most popular sights, such as Big Ben, Trafalgar Square, and Buckingham Palace.
Unlike in-car devices that rely on satellites to pinpoint someone's location, the SatLav uses mobile phone technology.
All that comes at a price, however. People will be charged 52 cents (25 pence) per text.
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