1. Field of the Invention
This invention broadly concerns a form useful as a promotional or gaming device which includes a detachable element which is initially integral with the form. The form is constructed and printed to be tamper-evident and folded to initially obscure a hidden message which is revealed when the element is detached.
2. Description of the Prior Art
Various promotional and gaming pieces have been developed which employ a paper backing and a hidden message. For example, game pieces have been developed which are adhesively attached to beverage cups and food containers and which may be removed and an adhesive cover pulled away to reveal the contents, as well as paper tickets and the like which have an opaque coating which may be removed by scratching with a coin or the like. U.S. Pat. No. 3,900,219 shows a lottery ticket or game piece which includes a base sheet on which information is printed and a two-ply cover which is adhesively adhered to the base sheet. Tearing away the intermediate sheet of the cover also tears the cover sheet to reveal a number printed on the front of the base sheet.
The promotional and gaming pieces of the prior art require specialized equipment to print, seal, apply coatings and adhesive, and apply to a substrate surface. There has developed a need for a promotional item made primarily of a paper material and which may be readily printed. There has developed a further need for a promotional item which may be printed on-demand and remains tamper-evident.