US5097505A
Expired / Lapsed
US
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Method and apparatus for secure identification and verification
Assignee: EMC Corp
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Filing: 1990-10-19
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Granted: 1992-03-17
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Expires: 2010-10-19
Abstract
Abstract A method and apparatus for performing personal identification and/or verification at perdetermined stations or checkpoints is provided. Each person to be identified has a unit such as a card, badge or other token or device which stores a predetermined coded value, at least a predetermined portion of which is changed at selected time intervals in accordance with an algorithm, the algorithm being such that the value of the predetermined portion of the stored coded value at any given time is nonpredictable. The unit has a triggering signal generator, the unit being responsive to the triggering signal to present an indication of the current stored coded value to the station, the station responding to the predetermined coded value for identifying the person. Triggering may be in response to detection of a predetermined beacon from the station, in response to a user keypad input or may be periodically generated. Security may be enhanced by the person inputting a unique PIN at the unit which PIN is utilized in generating the nonpredictable codes. The PIN input may also be used for triggering. Verification may be achieved by including a public code as part of the code which is presented from the unit which public code is not changed.
Inventors
- 👤 Kenneth P. Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
G; G06; G06F; G06F21/00; G06F21/30; G06F21/31; G06F21/313; G06F21/34; G06F21/35; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/0723; G06K7/00; G06K7/0008; G07; G07C; G07C1/00; G07C1/20; G07C9/00; G07C9/20; G07C9/215; G07C9/28; G06F2221/00; G06F2221/21; G06F2221/2103
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
125 words
A personal identification system comprising: a unit to be carried by a person to be identified, said unit containing, means for storing a predetermined coded value, means for changing at least a predetermined portion of the coded value at predetermined time intervals in accordance with a predetermined algorithm, the algorithm being such tat the value of said predetermined portion of the stored coded value at any given time is nonpredictable, means for producing a triggering signal, and means responsive to said triggering signal for causing an indication of the current stored coded value to be automatically produced in a predetermined sequence; and a station having means automatically responsive to the produced coded value sequence for identifying the person who is to be carrying the unit.
Claim 2
Dependent Claim
125 words
A personal identification system comprising: a unit to be carried by a person to be identified, said unit containing, means for storing a predetermined coded value, means for changing at least a predetermined portion of the coded value at predetermined time intervals in accordance with a predetermined algorithm, the algorithm being such tat the value of said predetermined portion of the stored coded value at any given time is nonpredictable, means for producing a triggering signal, and means responsive to said triggering signal for causing an indication of the current stored coded value to be automatically produced in a predetermined sequence; and a station having means automatically responsive to the produced coded value sequence for identifying the person who is to be carrying the unit.
Claim 3
Dependent Claim
29 words
A system as claimed in claim 1 wherein said station includes means for transmitting a beacon; and wherein said triggering signal producing means includes means for detecting said beacon.
Claim 4
Dependent Claim
29 words
A system as claimed in claim 2 wherein said means for transmitting is an RF signal source, and wherein the means for detecting is responsive to the RF signal.
Claim 5
Dependent Claim
34 words
A system as claimed in claim 2 wherein said RF signal source transmits at a predetermined frequency, and wherein said means for detecting includes a tuned circuit which absorbs energy at said predetermined frequency.
Claim 6
Dependent Claim
68 words
A system as claimed in claim 4 wherein said coded value is stored as a plurality of binary bits, and wherein said means for causing an indication includes means responsive to the RF signal detection for causing the bits of said stored coded value to be sequentially presented, and means responsive to the presented bits of said coded value for controlling the absorption state of said tuned circuit.
Claim 7
Dependent Claim
73 words
A system as claimed in claim 4 wherein said unit includes transmission means, wherein said coded value is stored as a plurality of binary bits, and wherein said means for causing an indication includes means responsive to said RF signal detection for causing the bits of said stored coded value to be sequentially presented, and means responsive to the presented bits of the coded value for controlling the output from said transmission means.
Claim 8
Dependent Claim
32 words
A system as claimed in claim 1 wherein said means for transmitting is an ultrasonic signal source, and wherein the means for detecting in the unit is responsive to said ultrasonic signal.
Claim 9
Dependent Claim
78 words
A system as claimed in claim 1 wherein said means for identifying includes means providing a current coded value for each person on the system, means for detecting and storing the current coded value indication produced by the unit, means for comparing the stored current value indication against each provided current coded value, and means responsive to a match between a provided current coded value for a person and the stored current value indication for identifying the person.
Claim 10
Dependent Claim
33 words
A system as claimed in claim 1 wherein the system controls access to or through a checkpoint; and including means responsive to the identification of the person for permitting access through the checkpoint.
Claim 11
Dependent Claim
34 words
A system as claimed in claim 1 wherein the system tracks the location of the person at a facility, and including a plurality of produced coded value responsive means selectively located at the facility.
Claim 12
Dependent Claim
51 words
A system as claimed in claim 1 wherein said unit contains a clock means the value of which changes at at least said predetermined time intervals, said algorithm utilizing said clock value and at least a portion of the current stored coded value to generate a new nonpredictable stored coded value.
Claim 13
Dependent Claim
47 words
A system as claimed in claim 1 wherein said unit contains a keypad with selected characters which the person may utilize to key in a unique PIN code, and wherein said means for changing utilizes the keyed in PIN in generating the nonpredictable current stored coded value.
Claim 14
Dependent Claim
87 words
A system as claimed in claim 12 wherein a predetermined subset of the stored coded value is a public ID code for the person which is not changed by said means for changing; and wherein said means for identifying includes means responsive to the produced public IC code for providing the current nonpredictable code for the person, means for comparing the provided nonpredictable code with the produced nonpredictable code, and means responsive to a match between the two nonpredictable codes for both identifying and verifying the person.
Claim 15
Dependent Claim
30 words
A system as claimed in claim 12 including means for storing said PIN for a predetermined duration, the PIN being removed from the unit at the end of said duration.
Claim 16
Dependent Claim
25 words
A system as claimed in claim 12 wherein said triggering signal producing means includes means responsive to the keyed PIN for generating the triggering signal.
Claim 17
Dependent Claim
33 words
A system as claimed in claim 1 wherein said unit includes a keypad, and wherein said triggering signal producing means includes means responsive to a predetermined keypad input for generating the triggering signal.
Claim 18
Dependent Claim
16 words
A system as claimed in claim 16 wherein said keypad input is a unique coded input.
Claim 19
Dependent Claim
17 words
A system as claimed in claim 16 wherein said keypad input is from a selected keypad area.
Claim 20
Dependent Claim
24 words
A system as claimed in claim 1 wherein said triggering signal producing means includes means for automatically generating triggering signals at selected time intervals.
Claim 21
Dependent Claim
25 words
A system as claimed in claim 1 including means for synchronizing said means for causing an indication to be produced and said means for identifying.
Claim 22
Independent Claim
130 words
A method for identifying a person comprising the steps of: storing a predetermined coded value at a unit carried by the person, changing at least a predetermined portion of the coded value at predetermined time intervals in accordance with a predetermined algorithm, the algorithm being such that the value of said predetermined portion of the stored coded value at any given time is nonpredictable, producing a triggering signal at the unit and causing the indication of the current stored coded value to be automatically produced in response to the triggering signal; and at a station where the person is to be identified, detecting an indication of the produced coded value, and automatically identifying the person who is to be carrying the unit in response to the detected produced coded value.
Claim 23
Independent Claim
130 words
A method for identifying a person comprising the steps of: storing a predetermined coded value at a unit carried by the person, changing at least a predetermined portion of the coded value at predetermined time intervals in accordance with a predetermined algorithm, the algorithm being such that the value of said predetermined portion of the stored coded value at any given time is nonpredictable, producing a triggering signal at the unit and causing the indication of the current stored coded value to be automatically produced in response to the triggering signal; and at a station where the person is to be identified, detecting an indication of the produced coded value, and automatically identifying the person who is to be carrying the unit in response to the detected produced coded value.
Claim 24
Dependent Claim
72 words
A method as claimed in claim 21 wherein the identifying step includes the steps of providing a current coded value for each person on the system, storing the current coded value indications produced by the unit, comparing the stored current value indications against each provided current coded value, and identifying the person in response to a match between a provided current coded value for a person and the stored current value indication.
Claim 25
Dependent Claim
36 words
A method as claimed in claim 21 wherein said unit includes a keypad; and wherein said producing a triggering signal step includes the step of producing the triggering signal in response to a predetermined keypad input.
Claim 26
Dependent Claim
19 words
A method as claimed in claim 21 wherein said triggering signal producing step is performed automatically at periodic intervals.
References Cited (Backward Citations)
US4578530A
Cited
US4509093A
Cited
US4599489A
Cited
US4819267A
Cited
US4720860A
Cited
US4856062A
Cited
US4885778A
Cited
US4802216A
Cited
US4890323A
Cited
US4731841A
Cited
US4907270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |