| 摘要 |
Methods and devices are described that authenticate portable tokens, such as plastic tokens used in casinos on card tables. The systems and methods a ssign authentication data to a token. The authentication data is verified wh en a person tries to redeem value on the token. A person's authentication da ta may be acquired via an interface provided by a gaming machine, for exampl e, and the authentication data stored so that the authentication information is later be read when someone tries to redeem value on the token. Only a pe rson who presents the tokens and authentication data could then negotiate su ch tokens.
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