Techniques for secure destruction of documents
First Claim
1. A method of shredding a paper sheet, the method comprising:
- receiving, by a system, a paper sheet;
generating, by the system, a fingerprint for the paper sheet, wherein generating the fingerprint comprises;
scanning a surface of the paper sheet using a light beam;
collecting a set of data points obtained when the light beam scatters from the surface of the paper sheet; and
generating the fingerprint for the paper sheet based upon the set of data points;
searching, by the system, a database for an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet; and
shredding, by the system, the paper sheet based on a result of the searching.
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Accused Products
Abstract
Techniques for generating fingerprints for articles and using the fingerprints for various applications. Scan-related parameter values, including the area of an article scanned, may be specified and varied from one scan to another for collecting data points used for generating fingerprints for articles. A paper shredder is provided that is configured to, prior to shredding a paper sheet, scan the paper sheet and generate a fingerprint for the paper sheet. Fingerprints may also be generated for media keys that are used to access media data. The fingerprint generated for a media key may be used to authenticate the media key. Access to media data corresponding to the media key may be made contingent on successful authentication of the media key.
180 Citations
14 Claims
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1. A method of shredding a paper sheet, the method comprising:
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receiving, by a system, a paper sheet; generating, by the system, a fingerprint for the paper sheet, wherein generating the fingerprint comprises; scanning a surface of the paper sheet using a light beam; collecting a set of data points obtained when the light beam scatters from the surface of the paper sheet; and generating the fingerprint for the paper sheet based upon the set of data points; searching, by the system, a database for an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet; and shredding, by the system, the paper sheet based on a result of the searching. - View Dependent Claims (2)
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3. A system comprising:
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a feeder adapted to receive a paper sheet; a fingerprinting unit comprising an imaging device and a processor, the fingerprinting unit adapted to generate a fingerprint for the paper sheet; and a shredding unit adapted to shred the paper sheet after the fingerprinting unit has generated a fingerprint for the paper sheet, wherein the fingerprinting unit is further adapted to; search a database for an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet; and if the database comprises an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet, update the entry to indicate that the paper sheet is shredded. - View Dependent Claims (4)
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5. A method comprising:
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receiving, by a system, a paper sheet; generating, by the system, a fingerprint for the paper sheet using a fingerprinting system, wherein generating the fingerprint comprises; reading machine readable information associated with the paper sheet to determine a set of parameters for controlling a scanner; operating the scanner using the determined set of parameters to obtain a set of data points for the paper sheet; and generating the fingerprint for the paper sheet using the set of data points; searching, by the system, a database to determine an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet; and determining, by the system, whether to shred the paper sheet based upon the entry. - View Dependent Claims (6, 7, 8)
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9. A system comprising:
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a fingerprinting unit comprising an imaging device and a processor; and a shredding unit, wherein the fingerprinting unit is configured to; generate a fingerprint for a paper sheet; search a database for an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet; if the database comprises an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet, determine a permission for shredding the paper sheet based on the entry; send instructions to the shredding unit to shred the paper sheet based on the permission; and update the entry to indicate that the paper sheet is shredded after the paper sheet is shredded by the shredding unit. - View Dependent Claims (10, 11)
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12. A non-transitory computer readable medium storing a plurality of instructions for controlling a processing system, the plurality of instructions comprising:
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instructions that cause the processing system to read machine readable information associated with a paper sheet; instructions that cause the processing system to determine, from the machine readable information, a set of control parameters for a scanner; instructions that cause the processing system to operate the scanner using the set of control parameters to generate a fingerprint for the paper sheet; instructions that cause the processing system to search a database for an entry comprising a fingerprint that matches the fingerprint generated for the paper sheet; and instructions that cause the processing system to update an entry matching the fingerprint generated for the paper sheet to indicate that the paper sheet is shredded. - View Dependent Claims (13, 14)
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Specification