Other

Em Microelectronic-marin Sa

Ipico South Africa (proprietary) Limited

Ipico South Africia (pty) Limited

Centralised Authentication of Products (pty) Ltd.

Albertus Jacobus Pretorius

Hendrik Lodewyk Van Eeden

Thierry Roz

Josef Preishuber-Pfluegl

Andreas Schuhai

Christopher Turner

Evert Schouten De Ruiter

William Hendrik Hofmeyr

Christophe Turner

An electronic tag is configured to be responsive to a TTO or TTF protocol energizing signal from a reader, but to suspend transmission when receiving an RTF protocol communication signal from a reader. The tag typically includes a protocol detectorwhich is operable to detect receipt of an RTF protocol communication signal and to suspend transmission when the electronic tag receives an RTF protocol communication signal from a reader.

RFID tag

A method of controlling the value of at least one on-line transaction involving a token associated with an authorized user comprises the steps of: prior to the at least one proposed transaction, receiving at a pre-transaction authorization station, pre-transaction authorization data. The authorization data comprises first time data relating to a time window within which the at least one proposed transaction must take place and first amount data relating to an amount with which a value of the at least one proposed transaction must comply. Substantially at the time of a proposed transaction, transaction data comprising second time data relating to a time instant of the proposed transaction and second amount data relating to a value of the proposed transaction is received at the authorization station. The authentication data and transaction data are compared in real time atand only if the transaction data complies with the authorization data, is the transaction enabled.

Controlling the value of a plurality of transactions involving payment token

Disclosed is a transponder of a radio frequency identification system. Connected to a controller is a memory storing r-pages of k-bits of data. A first page includes an ID code relating to an integrated chip forming part of the transponder. The controller is configured, after the transponder has been interrogated by a reader, automatically and on a transponder talk only basis, to transmit transponder ID data including a concatenation of pages. Each page is led by a respective m-bit header. The header includes: (a) a first part having a random number, (b) a second part having for the first page in the ID data, a total number of pages in the ID data and for any subsequent page, a page number of the page in the memory and; (c) a third part having a sequential number for the page in the ID data.

RFID transponder transmitting concatenation of pages

A method of authenticating an article includes the steps of, at an issuing station, selecting an inherent feature of the article and converting the feature into digital data to form an identification code for the article. An encryptor is used to encrypt the identification code utilizing a secret private key of an asymmetric encryption key pair and associated with the issuing party. The encrypted code is made available on a label accompanying the article. During a subsequent phase and at an authentication station, digital data relating to the feature is determined directly from the article and the code is decrypted utilizing a public key of the pair obtained from a third party in accordance with rules of a public key infrastructure. The determined data and the data relating to the feature retrieved from the decrypted code are compared to authenticate the article.

System and method of authenticating an article

Growing community of inventors

Pretoria, South Africa

Albertus Jacobus Pretorius