Privacy method, device and computer program
First Claim
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1. A computer-implemented privacy method, comprising steps of:
- an anonymizer device reading at least one data value for a target tag that is to be protected, wherein the at least one data value comprises a target tag identifier of the target tag,the anonymizer device generating a first set of tag identifiers;
the anonymizer device detecting a read request satisfying a specified condition, whereby a read request comprising a specified prefix is detected;
the anonymizer device comparing the specified prefix to the target tag identifier and to all tag identifiers of the first set of tag identifiers; and
the anonymizer device responding to the read request by sending a response signal if the specified prefix of the read request matches at least one of the target tag identifier and any one of the tag identifiers of the first set of tag identifiers, such that the response signal collides with a further response signal of the target tag.
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Abstract
The present invention relates to a privacy method for responding to read request. The present invention further relates to a device for generating a response signal and a computer program product. Methods and systems in accordance with embodiments of the invention validate, whether a read request is directed at a target tag to be protected, and, upon a match, respond to the read request by sending a response signal.
16 Citations
17 Claims
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1. A computer-implemented privacy method, comprising steps of:
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an anonymizer device reading at least one data value for a target tag that is to be protected, wherein the at least one data value comprises a target tag identifier of the target tag, the anonymizer device generating a first set of tag identifiers; the anonymizer device detecting a read request satisfying a specified condition, whereby a read request comprising a specified prefix is detected; the anonymizer device comparing the specified prefix to the target tag identifier and to all tag identifiers of the first set of tag identifiers; and the anonymizer device responding to the read request by sending a response signal if the specified prefix of the read request matches at least one of the target tag identifier and any one of the tag identifiers of the first set of tag identifiers, such that the response signal collides with a further response signal of the target tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A privacy device, comprising:
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an anonymizer device tag reader adapted to read a target tag identifier of a target tag to be protected, a memory device, operationally connected to the tag reader and adapted to store at least one read target tag identifier, an anonymizer device tag identifier generator adapted to generate a first set of tag identifiers and store the first set of tag identifiers in the memory device, a read request detector, adapted to detect a read request comprising a specified prefix, a comparator, operationally connected to the memory device and the read request detector and adapted to compare one or more tag identifiers stored in the memory device with the specified prefix of the detected read request, and a response signal generator, operationally connected to the comparator and adapted to generate a response signal if a comparison performed by the comparator results in a match, as determined when the specified prefix matches at least one of the target tag identifier and any one of the tag identifiers in the first set of tag identifiers. - View Dependent Claims (10, 11, 12, 13)
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14. A non-transitory computer program device readable by machine and storing program instructions that, on execution using a processing device of a privacy device perform the steps of the privacy device:
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generating a first set of tag identifiers; reading at least one data value for a target tag that is to be protected, wherein the at least one data value comprises a target tag identifier of the target tag; detecting a read request satisfying a specified condition, whereby a read request comprising a specified prefix is detected; comparing the specified prefix to the target tag identifier and to all tag identifiers of the first set of tag identifiers; and responding to the read request by sending a response signal if the specified prefix of the read request matches at least one of the target tag identifier and any one of the tag identifiers of the first set of tag identifiers, such that the response signal collides with a further response signal of the target tag. - View Dependent Claims (15, 16, 17)
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Specification