| http://www.w3.org/ns/prov#value | - A hidden entry system has now been discovered which can be used to provide hidden indicia on a document used, for example, in a contest or promotion, such as sweepstakes contest awards, lottery tickets, premium cards, promotional game cards, or the like, to hide indicia, which system comprises a support having an information area bearing a localized coating of a heat activatable chromogenic compos
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