发明名称 |
Method and system for generating time-based identifiers |
摘要 |
Methods and systems for generating time-based identifiers that are used for identifying items is described. In one embodiment, a master key is assigned to an electronic tag. Time-based other keys are generated based on the master key. Time-based identifiers are generated based on the time-based other keys. The time-based identifiers are useful only for a period of time to a holder of the time-based other keys. |
申请公布号 |
US7581108(B1) |
申请公布日期 |
2009.08.25 |
申请号 |
US20040829714 |
申请日期 |
2004.04.21 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
BOHM DENIS;LAMMING MICHAEL G.;MAYO ROBERT N.;MORGAN JEFFREY A.;ZHANG KAN |
分类号 |
H04L9/32 |
主分类号 |
H04L9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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