| http://www.w3.org/ns/prov#value | - In such an environment, a medium, such as a ticket, may be validated by providing a gaming machine comprising: (1) a display arranged to display a credit amount;(2) a medium generator arranged to generate a medium comprising a machine-readable validation code and a non-machine readable credit amount; (3) a reader unit arranged to read the validation code from the medium; and (4) a network interfac
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