Abstract: A method for a goods manager to authenticate products at the point of sale is provided. The method comprises: providing an authentication device to a merchant, wherein the authentication device is not associated with a product but is configured to receive product information from a merchant terminal; once information about a product has been received by the authentication device from the merchant terminal, obtaining from the authentication device a signed message comprising information about the authentication device and information about the product received from the merchant terminal; and providing authorization data to the authentication device if the information fulfils one or more criteria, thereby associating the authentication device with the product. A method for a merchant to authenticate goods at the point of sale and a merchant terminal to perform such a method are also provided.

Abstract: A first data processing apparatus comprising: communication circuitry configured to transmit data to or receive data from a second data processing apparatus using electromagnetic induction when the first data processing apparatus is brought into proximity to the second data processing apparatus; a storage medium; and processing circuitry configured: to control the communication circuitry to transmit first data indicative of a user of the first data processing apparatus to the second data processing apparatus; to control the communication circuitry to transmit second data to or receive second data from the second data processing apparatus, the transmission or reception of the second data occurring in response to the completion of a predetermined data processing event; to control the communication circuitry to receive third data from the second data processing apparatus, the third data being received in response to the completion of the predetermined data processing event and being digitally signed by the secon

Abstract: A method for a goods manager to authenticate products at the point of sale is provided. The method comprises: providing an authentication device to a merchant, wherein the authentication device is not associated with a product but is configured to receive product information from a merchant terminal; once information about a product has been received by the authentication device from the merchant terminal, obtaining from the authentication device a signed message comprising information about the authentication device and information about the product received from the merchant terminal; and providing authorization data to the authentication device if the information fulfils one or more criteria, thereby associating the authentication device with the product. A method for a merchant to authenticate goods at the point of sale and a merchant terminal to perform such a method are also provided.