Abstract: A low-cost system comprising a pattern arranged to encode information and a decoder for decoding the information encoded in the pattern is described. In particular, the mechanism employs a capacitive sensing technique. Electrodes are arranged (or stimulated, during operation) to each generate an electric field, and sense disturbances on the electric field caused by the pattern when the pattern is positioned over the electrodes. The spatial arrangement of the pattern allows information to be encoded on a strip or surface and decoded by capacitive sensors arranged to detect disturbances caused by possible patterns. The resulting solution is cheaper and less complex than optical solutions, e.g., barcodes and optical barcode readers. The mechanism may be used in a glucose meter for encoding and decoding an identifier for distinguishing batches of glucose meter test strips.

Abstract: A low-cost system comprising a pattern arranged to encode information and a decoder for decoding the information encoded in the pattern is described. In particular, the mechanism employs a capacitive sensing technique. Electrodes are arranged (or stimulated, during operation) to each generate an electric field, and sense disturbances on the electric field caused by the pattern when the pattern is positioned over the electrodes. The spatial arrangement of the pattern allows information to be encoded on a strip or surface and decoded by capacitive sensors arranged to detect disturbances caused by possible patterns. The resulting solution is cheaper and less complex than optical solutions, e.g., barcodes and optical barcode readers. The mechanism may be used in a glucose meter for encoding and decoding an identifier for distinguishing batches of glucose meter test strips.

Abstract: A wearable device has a motion detector configured to detect motion of the device and produce a motion signal relating to motion of the device, a contact sensor configured to detect if the device is in contact with an object and produce a contact signal relating to whether the device is in contact with an object, and a controller operatively coupled with the motion detector and the contact sensor. The controller is configured to switch between on and off-states as a function of at least one of the motion signal and contact signal. The device also has a sound transducer or other transducer operatively coupled with the controller. The controller is configured to change the state of the sound transducer between on and off-states in response to receipt of the motion signal, and the contact signal.