As presence of the election in the irregularities distinction mannered null game in the time of movement to

摘要

PPROBLEM TO BE SOLVED: To prevent an illegal change in settings using copied key and setting key. PSOLUTION: A pattern is disposed on the surfaces of reel tapes wound round reel bodies of first to third reels, and a bar code showing the pattern information is disposed on the backs of the reel tapes. When transition to the setting change mode is caused, a bar code located on the central prize winning line is read by a bar code reader. A read signal from the bar code reader is output to a presentation control device. In the presentation control device, a pattern code is analyzed from the read signal to determine whether or not it matches a preset pattern code for authentication. If they do not match, a warning is displayed on a liquid crystal display device, for example, or a warning sound is reproduced from a speaker constituting a presentation device, or a warning is displayed by controlling light emission of a lamp. PCOPYRIGHT: (C)2006,JPO&NCIPI