| 摘要 |
PCT No. PCT/EP81/00173 Sec. 371 Date Jun. 21, 1982 Sec. 102(e) Date Jun. 21, 1982 PCT Filed Oct. 30, 1981 PCT Pub. No. WO82/01610 PCT Pub. Date May 13, 1982.A method of producing a controlled number of authorization members used for providing access to limited access machines or restricted areas, the method including generating a hierarchy of members having different levels of authorization prior to producing the authorization member. |
