Tart cards are cards placed in phone booths to advertise the services of call girls. They are most common in London[1] but can be found elsewhere in the United Kingdom. They are typically placed in phone booths by professional "carders", who tour the phone booths, replacing cards which have been removed by the telephone companies' cleaners. Placing them in phone booths is now illegal, although it still continues.[2]
Similar cards may be found in phone booths and scattered on the streets of Las Vegas, where they are known as "sex cards".[3]
Similar advertise may be found on the streets and in the public men's toilets of Seoul.
Phone booths in Buenos Aires and São Paulo are also used to place tart cards.[4] [5]
A kind of tart cards can also be found in Warsaw, Poland, where they are placed behind windscreen wipers in the central parts of the city. The cards are distributed by "carders".