Abstract: A method including authenticating a voucher which has a time limited validity period. The method comprises: a user requesting issuance of a token to a customer in a machine readable form; and issuing one or more modified versions of the token to the user, each modified version of the token being associated with a different time period of validity of the token; scanning the ticket on a scanning device connected to a terminal operated by the user; the scanning device modifying the token according to a current time period; and the terminal operated by the user comparing the modified token provided by the scanner with the modified tokens issued by the central server to validate the scanned token. A further method is provided for performing a transaction, between a customer and a vendor, using a customer's mobile phone as an authorisation device.

Abstract: A method including authenticating a voucher which has a time limited validity period. The method comprises: a user requesting issuance of a token to a customer in a machine readable form; and issuing one or more modified versions of the token to the user, each modified version of the token being associated with a different time period of validity of the token; scanning the ticket on a scanning device connected to a terminal operated by the user; the scanning device modifying the token according to a current time period; and the terminal operated by the user comparing the modified token provided by the scanner with the modified tokens issued by the central server to validate the scanned token. A further method is provided for performing a transaction, between a customer and a vendor, using a customer's mobile phone as an authorisation device.

Abstract: An electronic commerce method that includes publishing an offer for a product or service, receiving the published offer and conditionally accepting the offer, and forwarding the conditional acceptance to a matching processor to request the product or service. The matching processor receives the conditional acceptance by the matching processor, determines whether conditions present in the conditional acceptance can be fulfilled, and forwards at least one option for acceptance. The at least one option for selection is displayed and the user, selects any one of the at least one options. Upon selection, a token is provided to the user. The token is configured to be used to redeem the service or product, be transferable to another user device, or to be stored for future redemption of the product or service.

Abstract: A method that enables the mapping of token identity and token presentation context to invoke one or more applications that are associated with the given token and context is disclosed. The method enables the construction of a flexible and efficient token-in-context services platform.

Abstract: A method for constructing electronic commerce services and conducting electronic commerce transactions is disclosed. The method is illustrated by instantiating and storing the electronic contract on a server; issuing and transmitting a token message to one or more contracting party's client device. Using a processor to intercept the token message and contact the server to retrieve the electronic contract associated with the token message; and downloading or uploading digital media as instructed by the electronic contract. The method is based on the uniform, highly expressive representation of electronic contracts as digital objects. A system based on a distributed object architecture that implements the method is also described. The architecture enables the execution of the promises encoded as part of an electronic contract to be executed on any device that implements an electronic contract interpreter mechanism.