IDENTIFYING AN IDENTITY CARRIER

The invention relates to a method for identifying an identity carrier (TAG) with an ID stored thereon, having the following steps: a) reading the ID from the identity carrier (TAG) using an interrogator; and b) transmitting the ID to a server using the interrogator, said server comprising a database with a plurality of IDs from a plurality of identity carriers, and identifying the identity carrier (TAG) using the read ID, wherein the method is characterized by the following features: the read ID is concealed using the following measures: the ID is now only read as a hash value calculated using a salt; for each ID with an assigned handle, the assigned handle is stored with the ID in the database; the handle is read as a fuzzy ID which is generated by applying a fuzzy algorithm with a specified hamming distance (t) to the handle; a fuzzy search is carried out in the server using the fuzzy ID, said fuzzy search providing a plurality of candidate handles; for each candidate handle, the assigned ID is ascertained; a comparison hash value is calculated for each candidate ID ascertained in this manner by applying the hash algorithm to the candidate ID and the transmitted salt in order to generate a plurality of comparison hash values; the comparison hash values are compared with the hash value transmitted to the server; and the identity carrier with the ID whose comparison hash value matches the hash value transmitted to the server is identified.