Abstract: A flexible multi-layer sensing surface comprises a first flexible layer and a second flexible layer. The first flexible layer is a sensing layer and the second sensing layer is another sensing layer or an output layer. The sensing surface also comprises a calibration module which is configured to use the first flexible sensing layer to detect the relative position of the first and second flexible layers and this detected relative position is then used to update one or more stored operating parameters.

Abstract: A building block is described which has a plurality of faces each with an associated coupling element, such that a first coupling element is adjacent to a first face and a second coupling element is adjacent to a second face, etc. An RF switch in the block is arranged to selectively couple two of the coupling elements together under the control of a processor. The processor controls the RF switch in response to signals received from a transceiver module. A sensing and switching arrangement within the building block selectively connects the processor to one of the coupling elements based on a detected orientation of the block (e.g. so that power harvested from the transceiver module can be used to power the processor). The coupling elements are either all antennas or all electrodes.

Abstract: A building block is described which has a plurality of faces each with an associated coupling element, such that a first coupling element is adjacent to a first face and a second coupling element is adjacent to a second face, etc. An RF switch in the block is arranged to selectively couple two of the coupling elements together under the control of a processor. The processor controls the RF switch in response to signals received from a transceiver module. A sensing and switching arrangement within the building block selectively connects the processor to one of the coupling elements based on a detected orientation of the block (e.g. so that power harvested from the transceiver module can be used to power the processor). The coupling elements are either all antennas or all electrodes.

Abstract: A flexible multi-layer sensing surface comprises a first flexible layer and a second flexible layer. The first flexible layer is a sensing layer and the second sensing layer is another sensing layer or an output layer. The sensing surface also comprises a calibration module which is configured to use the first flexible sensing layer to detect the relative position of the first and second flexible layers and this detected relative position is then used to update one or more stored operating parameters.

Abstract: A short-range wireless tag has a conductive footprint which is not rotationally symmetric where this footprint is formed from an antenna within the short-range wireless tag and optionally one or more additional conductive areas within the short-range wireless tag. The orientation of such a short-range wireless tag may be determined by a sensing surface when the tag is placed on the surface and where the surface comprises an array of RF antennas and/or a capacitive sensing electrode array.