Security check provision
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Accused Products
Abstract
Security check method and apparatus reduces problems that can arise if the user security data set becomes known by unauthorized persons. To address this problem only part of the user data set is recorded in insecure sections of the system. For example, a security check preventing unauthorized remote access to a shared computer is provided by capturing a user data set representing a user'"'"'s iris, operating the user'"'"'s personal computer to select only a portion of the captured data set requested by the shared computer and transmitting the portion along a telecommunications line. The shared computer derives partial data sets from stored user data sets using a similar selection to that used by personal computer and compares the partial data set it has derived with the partial data set transmitted by the personal computer in deciding whether to grant access. Point-of-sale devices and cards recording only partial user data sets are also disclosed.
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Citations
27 Claims
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1-23. -23. (canceled)
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24. A security check terminal comprising:
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a user partial biometric data acquisition device operable to;
(a) obtain, from a user attempting to pass the security check, a user entire biometric data set; and
(b) obtain a user partial biometric data set from the user entire biometric data set without obtaining additional biometric data from the user, the obtaining of said user partial biometric data set involving the selection of elements from the user entire biometric data set;
a reader operable to read an authorised person partial biometric data set stored on a portable device for use in enabling said user to pass said security check, said authorised person partial biometric data set comprising elements selected from an authorised person entire biometric data set associated with said user, without encoding any of the remaining elements in said authorised person entire biometric data set, said authorised person entire biometric data set being stored at an authentication apparatus, wherein the selection used in generating said authorised person partial biometric data set from said authorised person entire biometric data set is related to the selection used in generating said user partial biometric data set from said user entire biometric data set;
comparison means operable to compare said user partial biometric data set with said authorised person partial biometric data set; and
an authenticity signal generating means operable to generate a signal indicative of whether said user is an authorised person on the basis of the comparison made by said comparison means. - View Dependent Claims (25, 27)
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26. A portable device for use in enabling a user to pass a security check, the portable device comprising a storage medium for storing an authorized person partial biometric data set comprising elements selected from an authorized person entire biometric data set associated with the user, without encoding any of the remaining elements in the authorized person entire biometric data set, wherein the selection used in generating the authorized person partial biometric data set from the authorized person entire biometric data set is related to a selection used in generating a user partial biometric data set from a user entire biometric data set in a security check terminal, the security check terminal being operable to compare the user partial biometric data set with the authorized person partial biometric data set and generate a signal indicative of whether the user is an authorized person to pass the security check on the basis of the comparison of the user partial biometric data set with the authorized person partial biometric data set, the user partial biometric data set being obtained from the user entire biometric data set without obtaining additional biometric data from the user and the obtaining of the user partial biometric data set involving the selection of elements from the user entire biometric data set.
Specification