Personal identification devices and access control systems

Personal identification devices and access control systems

146 plurality of character information, and selecting a text character of the document. If the character information corresponding to the selected tex...

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146 plurality of character information, and selecting a text character of the document. If the character information corresponding to the selected text character is found in the font memory, a corresponding user-defined code is assigned to the selected text character, and the corresponding user-defined code is stored in a character information region of a font file. The character information corresponding to the selected text character is stored in the character information region of the font file, and the basic unit information of the constituting basic units that constitute the selected text character is stored in a basic unit information region of the font file. If the character information corresponding to the selected text character is not found in the font memory, a corresponding user-defined code is assigned to the selected text character and is stored in the character information region of the font file, and outline data of the selected text character is generated and stored as character information of the selected text character in the font file.

invalidated passwords. There is a comparator unit for comparing the available periods of passwords and notifying the update processing unit of a request to update the password. Also provided is a period setting unit for prescribing, upon setting of each password, the available period and the update set period of that password on the basis of the analysis of the frequency of accesses, and conveying that information to the password hysteresis memory unit. A display unit displays various messages; and an input unit inputs various information.

5608387 PERSONAL IDENTIFICATION DEVICES AND ACCESS C O N T R O L SYSTEMS Davies John H E UNITED KINGDOM

5606663 P A S S W O R D U P D A T I N G SYSTEM TO V A R Y THE P A S S W O R D UPDATING INTERVALS A C C O R D I N G TO ACCESS F R E Q U E N C Y Kadooka Etsuk Corporation

Tokyo, JAPAN assigned to NEC

A password updating system sets the available period and the updating period of the password for each individual user according to the frequency of his accesses to the computer system, and manages password updating by urging the user in advance to change his password on the basis of these periods. There is a chronometric unit; and a password hysteresis memory unit for memorizing and managing passwords and their available periods. An update processing unit checks the input password, requests reentry if the same password exists or updates it if no same password exists, invalidates the current password if the updating period of the password has expired, and also validates

Berkhamsted, Hertfordshire,

PCT No. PCT/GB92/02220 Sec. 371 Date May 26, 1994 Sec. 102(e) Date May 26, 1994 PCT Filed Nov. 30, 1992 PCT Pub. No. WO93/11511 PCT Pub. Date Jun. 10, 1993. A lock which by physical or logical means controls human access to an objective such as a restricted area or a computer system is controlled by a data processing system which has access to a store of authorised users and a store of complex images, specifically images of human faces. Each authorised user knows certain ones of the complex images, and these key images are linked to an identity statement unique to that user. On receipt of an identity statement signifying an authorised user, a matrix of images including the key images is presented to the user on a display, and by means of a suitable input device the user must identify which images are his key images in order to confirm authorisation and be permitted access. The user and image stores may be carried in credit card form as a section of an optical disk. The high security of the system results from the inability of a person to communicate adequately to another the ability to recognise a third person or other complex image.