Abstract: There is presented a wearable device (200) and corresponding system and method for sensing a substance ingested by a subject, for instance an intoxicating substance. The wearable device has a sensing arrangement extending between a first port (205a) and a second port (205b). The sensing arrangement includes two chambers, a pump and two flow-control devices. The first chamber is adapted to collect gas from a skin region of the subject. The second chamber has a sensor to sense the substance. The first flow-control device is provided at the first port (205a) and the second flow-control device is provided at the second port (205b). A controller is provided to control the pump and the sensor. The controller is operable in a first phase to sense a first gas sample from ambient environment, and a second phase to sense a second gas sample from a skin region of the subject.

Abstract: The disclosure relates to a wearable device 200 for tracking a subject. It includes a flexible member attachable on a limb of the subject, an electronic circuit 210 and a connector 230. The flexible member has a first portion 220a comprising a first set of conducting channels, and a second portion 220b comprising a second set of conducting channels. The electronic circuit 210 is coupled to the first portion and the second portion. The connector 230 is adapted to connect the first portion to the second portion. Upon connection at least one channel from the first set is connected to a channel from the second set to obtain a channel connection.

Abstract: An ingestion monitoring system (100) comprising: one or more acoustic transducers (102); an analogue to digital converter (208) arranged to convert electrical signals from the acoustic transducer to digital form; and a processor (210) arranged to process the digital signal to detect an ingestion event.

Abstract: An activity monitor comprising one or more acoustic transducers (100) and a computation component (104) that is arranged to identify events from acoustic signals received by the acoustic transducers (100).

Abstract: A computer-implemented method comprises: receiving (100) first information indicative of a tracking device being located in a particular place, for example by detecting that the tracking device is connected to a charging station for charging; receiving (102) second information, from a passive detecting means, indicative of the user of the tracking device leaving said place, for example based on sounds that the user has made in leaving; (104) determining, based on the first and second information, that a user of the tracking device leaves said place while the tracking device remains in said place; further to said determining, causing (106) at least one separation related action to be performed, for example sending a message to a remote server (14).

Abstract: A method of and apparatus for defining a zone, comprising receiving (S3) location data indicative of the location of a device 2 at a plurality of times, determining (S14), based on the location data, information relating to the occupancy of the device in a plurality of geographical regions, and defining (S15), based on the information, at least one zone. The or each zone consists of multiple contiguous regions of the geographical regions in which the occupancy of the device meets at least one criterion. Each of the plurality of predetermined geographical regions is defined independently of location areas over which base stations transmit and receive.

Abstract: A method comprising maintaining (A, B), by a device (6), communication with a monitoring unit (7); determining, by the device, an absence of communication from the monitoring unit; based at least on a result of said determining, starting monitoring (F) of at least one variable related to distance moved by the device and/or time elapsed; if the at least one variable meets at least one criterion, determining that the absence of communication from the monitoring unit is not due to a blind spot. A device securely attachable to a person (5) may be configured to carry out this method, which may be user in offender monitoring.

Abstract: A method of and apparatus for defining a zone, comprising receiving (S3) location data indicative of the location of a device 2 at a plurality of times, determining (S14), based on the location data, information relating to the occupancy of the device in a plurality of geographical regions, and defining (S15), based on the information, at least one zone. The or each zone consists of multiple contiguous regions of the geographical regions in which the occupancy of the device meets at least one criterion. Each of the plurality of predetermined geographical regions is defined independently of location areas over which base stations transmit and receive.

Abstract: A clasp system for attaching two elements, comprising first and second parts (A, B) each having a body (10, 11) for attachment to a respective one of the elements. The first and second parts having a fastening means comprising first and second fastening portions (1, 6), the first part including the first fastening portion and the second part including the second fastening portion. The first fastening portion and the second fastening portion are respectively configured for clipping engagement to fasten the first and second parts together. The unfastening comprises a relative twist movement of the first and second parts to unclip the first and second fastening portions. The first and second parts further comprise magnetic material (2, 3, 4, 5) arranged to pull the first and second parts together into the clipping engagement when the first and second parts are relatively oriented in a predetermined manner and spaced less than a predetermined maximum distance apart.