Personal identification apparatus using measured tactile pressure
First Claim
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1. A personal identification apparatus for measuring tactile pressures exerted by a person'"'"'s hand and indicative of his identity, comprising:
- a pressure plate having a template of a human hand including a palm area and a plurality of elongated finger areas;
a plurality of pressure sensors distributed on said plate and within said template such that more of said pressure sensors are positioned near a periphery of the palm area than near a center of the palm area, wherein each of the pressure sensors is operative to provide an output signal proportional to a pressure applied to said plate at the area at which said sensor is located, to enable said sensors to provide said output when a person'"'"'s hand is emplaced on said plate to exert a pressure on said plate,storage means for storing pressure profile signals of enrolled persons requiring identification, andmeans for comparing said stored pressure profile with said output pressure signals to provide a favorable comparison when said output signals conform to said stored profile signals for positively identifying said person.
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Abstract
A personal identification system employs a matrix of pressure sensors mounted to a plate having a template of a human hand. When a person'"'"'s hand is placed on the plate and overlying the template a pressure profile of the person'"'"'s hand is provided. This profile is compared with a stored pressure profile of the same person'"'"'s hand. If the pressure points or profiles correlate a positive identification of the person is made.
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Citations
15 Claims
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1. A personal identification apparatus for measuring tactile pressures exerted by a person'"'"'s hand and indicative of his identity, comprising:
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a pressure plate having a template of a human hand including a palm area and a plurality of elongated finger areas; a plurality of pressure sensors distributed on said plate and within said template such that more of said pressure sensors are positioned near a periphery of the palm area than near a center of the palm area, wherein each of the pressure sensors is operative to provide an output signal proportional to a pressure applied to said plate at the area at which said sensor is located, to enable said sensors to provide said output when a person'"'"'s hand is emplaced on said plate to exert a pressure on said plate, storage means for storing pressure profile signals of enrolled persons requiring identification, and means for comparing said stored pressure profile with said output pressure signals to provide a favorable comparison when said output signals conform to said stored profile signals for positively identifying said person. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A personal identification apparatus for measuring tactile pressures indicative of a person'"'"'s identity, comprising:
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a replication matrix indicative of a template of a hand and capable of accommodating typical variations of people'"'"'s hand size, wherein the template includes a palm area and a plurality of elongated finger areas, a plurality of pressure sensors distributed within said matrix, each providing an output signal when a person'"'"'s hand is emplaced to exert pressure on said matrix, wherein more of said pressure sensors are positioned near a periphery of the palm area than near a center of the palm area; storage means for storing pressure profile signals of enrolled persons having access to said personal identification apparatus, and means for comparing said provided output signals with said stored profile signal indicative of a person to be identified to provide a favorable comparison when said output signals conform to said stored profile signals for positively identifying said person. - View Dependent Claims (9, 10, 11)
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12. A method of performing personal identification of a user who requires identification to be authorized, comprising the steps of:
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providing a matrix of pressure sensors on a plate to which said user'"'"'s hand can be emplaced, wherein the plate includes a template indicative of a human hand having a palm area and a plurality of elongated finger areas, and wherein a greater number of said sensors are positioned near a periphery of the palm area than near a center of the palm area, first emplacing said user'"'"'s hand on said plate to cause selective pressure sensors responsive to the pressure applied by said hand to provide profile output signals, and storing said output signals in a memory to obtain a hand pressure profile for said user. - View Dependent Claims (13, 14, 15)
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Specification