Abstract: The present invention relates to a sensor arrangement comprising a support substrate and at least two microwave antennas fixedly arranged in or on said support substrate, each microwave antenna being separated from all other microwave antennas by a band-stop structure configured to cancel direct coupling between the microwave antennas, said sensor arrangement further comprising microwave signal transmission paths configured to transmit microwave signals to or from said microwave antennas. The invention also relates to a system comprising such a sensor arrangement and a method for non-invasive assessment of a property of subdermal tissue in a subject.

Abstract: A fraud detection system for a self-service terminal which has a card reader includes an optical proximity sensor and an electrode for a capacitive proximity sensor mounted adjacent to a slot in the card reader. A controller is coupled to the optical proximity sensor and the capacitive proximity sensor. The controller compares a proximity signal from the optical proximity sensor with a first predetermined proximity threshold that is adjusted based on a level of ambient infrared light at that sensor, and sets an alarm signal when an object is closer than the adjusted first predetermined proximity threshold. The controller also compares a proximity signal from the capacitive proximity sensor with a second predetermined proximity threshold that is adjusted based on a level of luminosity light at the optical proximity sensor, and sets an alarm signal when an object is closer than the adjusted second predetermined proximity threshold.

Abstract: A first set of replicated state machines includes a first state machine that compares a clock value included in a state update message incremented by a first amount, a clock value for the first state machine incremented by a second amount, and a current local wall clock value for the first state machine to determine a maximum value and assigns the maximum value as the clock value for the first state machine. Additionally, in response to a passage of an amount of time, the first state machine advances the clock value for the first state machine to its current local wall clock value and propagates this clock value to the other state machines in the first set of replicated state machines. The advancement of the clock value for all state machines even in the absence of state updates improves their ability to respond to distributed read requests.

Abstract: A first set of replicated state machines includes a first state machine that compares a clock value included in a state update message incremented by a first amount, a clock value for the first state machine incremented by a second amount, and a current local wall clock value for the first state machine to determine a maximum value and assigns the maximum value as the clock value for the first state machine. Additionally, in response to a passage of an amount of time, the first state machine advances the clock value for the first state machine to its current local wall clock value and propagates this clock value to the other state machines in the first set of replicated state machines. The advancement of the clock value for all state machines even in the absence of state updates improves their ability to respond to distributed read requests.