Abstract: A method of validating the authenticity of a ticket including a unique ticket identifier generated at an issuing terminal in accordance with a confidential algorithm is provided. The method includes receiving one or more identification variable values expressed with respect to a first coordinate measurement domain, the one or more identification variable values enabling the location of ticket verification information within the unique ticket identifier to be determined, using a coordinate transform function configured to map coordinate values from the first coordinate measurement domain to a second coordinate measurement domain to calculate one or more values of the one or more received identification variable values with respect to the second coordinate measurement domain, extracting the verification information from the unique ticket identifier on the basis of the calculated identification variable values, and verifying the authenticity of the ticket on the basis of the extracted verification information.

Abstract: A method of securely transmitting communication information from a first terminal operating in a first coordinate measurement domain to a second remotely-located terminal operating in a second coordinate measurement domain is described.

Abstract: A control system for tracking moving objects and controlling an action at a selected one of a plurality of geographic locations is described.

Abstract: A method for compensating for transmission channel distortion effects for a data signal transmitted from a first computing device via the transmission channel to a second computing device is provided.

Abstract: A control system for tracking moving objects and controlling an action at a selected one of a plurality of geographic locations is described.

Abstract: A system for creating a virtual ticket from a fixed location using a portable user device as a ticketing terminal, the virtual ticket having a plurality of user-selected variables associated with the virtual ticket, the system comprising: a local device arranged to broadcast an identifying signal at the fixed location in a vicinity of the local device; the portable user device having a wireless communications module, the portable user device comprising: a receiver for receiving the identifying signal when in the vicinity of the local device at the fixed location, the portable user device being arranged to display ticketing information relating to the identifying signal on the portable user device, the ticketing information including at least some of the user-selectable variables; a user selection module arranged to enable the user to select the values of the plurality of the user-selectable variables relating to the displayed ticketing information; wherein the wireless communications module is arranged to tra

Abstract: A personal security device for use in signaling an alarm event is described which is arranged to be worn on or about the human body in an accessible manner. The device comprises: user-operable activation means for activating a response to an alarm event, the activation means being activatable by a physical change of state caused by user interaction with the activation means and being arranged to indicate activation to the user in a subtle, non-obvious manner, a transmitter responsive to the activation means for transmitting an alarm event signal indicating the occurrence of an alarm event; and an inactive power source integrated into the device, the inactive power source being coupled to the transmitter. The activation means is arranged to interact with the inactive power source to activate the same and thereby electrically power the transmitter and initiate the sending of the alarm event signal.

Abstract: This disclosure provides for a method of securely transmitting communication information from a first terminal operating in a first coordinate measurement domain to a second remotely-located terminal operating in a second coordinate measurement domain. The method includes combining the communication information with extraneous information to create a data signal, determining a value of an identification variable expressed with respect to the first coordinate measurement domain, where the identification variable value enables the location of the communication information concealed within the data signal to be determined, using a coordinate transform function to calculate a value of the received identification variable expressed with respect to the second coordinate measurement domain, and extracting the information from the received data signal using the calculated identification variable value to distinguish the communication information from the extraneous information.