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A digital ticket is a virtual instance of a ticket which represents the digitization of rights to claim goods or services. ==Criteria== A digital ticket must fulfill the following criteria: * Secure (unable to alter or counterfeit) * Portable (physical independence) * Off-line capable * Wide acceptability (In order to have the ticket generally accepted, some level of trust is needed.) * User-friendly In addition, another three requirements are also important for digital tickets, they are: * Viewable :The terms and description of the service should be objectively understood by both the service provider and consumer or owner, so the value of the ticket can be determined. Moreover, this is an essential property to trace the digital ticket. * State manageable :Tickets may also have a payment status, i.e., paid or unpaid, and/or reservation status, e.g., waiting list, reserved, or canceled. The status may be changed dynamically. In addition, the ticket ownership can be rewritten when the ticket is transferred. However, it is difficult to allow these changes while still guaranteeing security. * (De)Composable :Combining two or more tickets is sometimes required to obtain a service or one ticket may comprise several parts. For example, a travel ticket can comprise an accommodation ticket and a plane ticket or a car rent ticket. Besides the criteria mentioned above, there are still several features that should be concerned, such as anonymity, transferability and repetitive usability. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Digital ticket」の詳細全文を読む スポンサード リンク
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