Patent ID: 7899708

Claim:
A method of transacting objects, each object comprising an identifier identifying an object identity, said method comprising the steps of: performing a potential transaction interaction with one of the objects by reading the identifier using a data reader; generating transaction data in the data reader, said transaction data identifying the object identity; sending the transaction data from the data reader to a computer system, thereby enabling the computer system to identify a transaction history for the object identity and determine whether the object identity has been transacted in a previous interaction; and if the object identity has been previously transacted: receiving, in the data reader, the transaction history data and displaying, via a display screen of the data reader, the received transaction history data to a user in response to performing the potential transaction interaction; otherwise if the object identity has not been previously transacted: transacting the object in response to performing the potential purchasing transaction, wherein the transaction history data identifies when at least one previous transaction of the object identity was made, said transaction history data enabling a user to conclude whether the object is second-hand or the identifier is a duplicate.