Abstract: A flexible energy absorbing system comprising a material coated, impregnated and/or combined with a strain rate sensitive substance is disclosed. It is formed so as to define repeating adjacent cells, each cell having a re-entrant geometry such that, upon impact, the material locally densifies at the impact site.

Abstract: Certain aspects of the present disclosure provide measures, including apparatuses, circuitry, methods and computer programs, for use in monitoring user activity. Orientation data for a user is generated. The generated orientation data is inserted into advertising packets of a wireless communication protocol. The advertising packets comprising the generated orientation data are broadcast according to the wireless communication protocol.

Abstract: An apparatus and methods for impact detection are disclosed. Example apparatus comprises a plurality of sensors. The apparatus is configured to determine whether a user is wearing an item in which the apparatus is comprised, and in response to a positive determination, operate the apparatus in an active operating mode. The active operating mode comprises operating one or more sensors in the plurality to generate data associated with motion of the user at a first sampling rate.

Abstract: Certain aspects of the present disclosure provide measures, including apparatuses, circuity, methods and computer programs, for use in monitoring user activity. Orientation data for a user is generated. The generated orientation data is inserted into advertising packets of a wireless communication protocol. The advertising packets comprising the generated orientation data are broadcast according to the wireless communication protocol.

Abstract: Certain aspects of the present disclosure provide an apparatus comprising a battery encapsulated within a sealed enclosure, an electronic device encapsulated within the sealed enclosure, a power control circuit encapsulated within the sealed enclosure, and a loop of conductive medium connected to the power control circuit. The electronic device is in a deactivated state. At least a portion of the loop of conductive medium passes out of and back into the sealed enclosure. In response to severing of the at least portion of the loop of conductive medium which is outside of the sealed enclosure, the power control circuit is configured to cause activation of the electronic device.

Abstract: An apparatus for impact detection is disclosed. An example apparatus comprises a plurality of sensors and is configured to determine whether a user is wearing an item in which the apparatus is comprised, and in response to a positive determination, operate the apparatus in an active operating mode, which includes operating one or more sensors in the plurality of sensors to generate data associated with motion of the user at a first sampling rate.

Abstract: Certain aspects of the present disclosure provide measures, including apparatuses, circuitry, methods and computer programs, for use in monitoring user activity. Orientation data for a user is generated. The generated orientation data is inserted into advertising packets of a wireless communication protocol. The advertising packets comprising the generated orientation data are broadcast according to the wireless communication protocol.

Abstract: A flexible energy absorbing system comprising a material coated, impregnated and/or combined with a strain rate sensitive substance is disclosed. It is formed so as to define repeating adjacent cells, each cell having a re-entrant geometry such that, upon impact, the material locally densifies at the impact site.