Going with my mom to cash in her $50,000 winning scratch ticket. only 4 of these tickets are in circulation in 3 states and she nailed one! good for you mom
A scratchcard is a small card, often made of thin paper-based card for competitions and plastic to conceal PINs, where one or more areas contain concealed information which can be revealed by scratching off an opaque covering.
Applications include cards sold for gambling , free-of-charge cards for quizzes, fraudulent free cards encouraging calls to premium rate phone services, and to conceal confidential information such as PINs for telephone calling cards and other prepaid services. (source : wikipedia)