Abstract: A heart activity sensor structure includes a flexible textile substrate, and at least two electrodes with an electric insulation between each of the at least two electrodes. The at least two electrodes are applied on one side of the flexible textile substrate and configured to be placed against a skin of an exerciser in order to measure biosignals related to heart activity. The heart activity sensor also includes an electrostatic discharge shield applied on one side of the flexible textile substrate for protecting the at least two electrodes from static electricity.

Abstract: An electrode belt includes at least one electrode to measure biometric signals related to heart activity of a user, a non-conductive strip having at least one opening, and a flexible strip to enable placement of the electrode belt against the skin of the user. The non-conductive strip is coupled with the flexible strip such that, when in use, the at least one electrode is in physical contact with the skin of the user.

Abstract: A computer-implemented method estimates sleep quality of a user. A related computer system, a computer program product, and a data structure are also described.

Abstract: A wristband, an electronics module, and a wrist device are disclosed. The wristband and the electronics module form the modular wrist device. The electronics module, when mounted to the wristband, stiffens a structure of at least a portion of the wrist device in order to enable the wrist device to firmly attach against a wrist of a user and to enable optical heart activity measurement by the electronics module.

Abstract: A method for operating cellular connectivity in a wearable device includes configuring a sensor device to measure physical activity of a user and to output measurement data representing the measured physical activity; establishing, by using a cellular radio device included in the wearable device, cellular connectivity with an access node of a cellular communication system; and adjusting utilization of cellular uplink resources allocated to the cellular radio device according to a rate at which the measurement data from the sensor device becomes available for uplink transmission in the wearable device.

Abstract: An apparatus includes at least one base layer arranged as a substrate for printed electronics; an energy harvester printed on the at least one base layer and arranged to transform kinetic energy into electric energy; an energy storage printed on the at least one base layer, coupled to the energy harvester, and arranged to store the electric energy; a display element printed on the at least one base layer, coupled to the energy storage, and arranged to provide a display view to a user of the apparatus; and a control circuitry configured to determine the amount of the electric energy stored in the energy storage and to control the display element to update the display view according to the amount of the electric energy. A method and a computer program product for controlling manufacturing of the apparatus are also disclosed.

Abstract: A system includes a wrist computer and a portable video camera. The wrist computer acquires physical activity data measured by a sensor device, generates a time marker on the basis of the physical activity data, and transmits the time marker to the portable video camera according to a predefined wireless communication protocol. The portable video camera is configured to record video data, encode the video data into a video data file, and store the received time marker as meta data in the video file.

Abstract: A method provides a service in a Bluetooth device. The method includes initiating, in a first Bluetooth device connection establishment with a second Bluetooth device; carrying out a service discovery procedure with the second Bluetooth device, during which at least one unique service identifier associated with a personal training data service is exchanged between the first Bluetooth device and the second Bluetooth device, wherein the personal training data service comprises at least one personal training data item processed by the first Bluetooth device and/or the second Bluetooth device during a physical exercise; and after the service discovery procedure, transferring at least one frame with the second Bluetooth device, wherein the frame comprises an information element specifying personal training data and a command information element specifying how to process the personal training data.

Abstract: A method includes: receiving, by a wrist device, a notification of an event, wherein the notification is indicated to a user of the wrist device; in response to receiving the notification, initiating at least one measurement; determining, based on the at least one measurement, that a predetermined condition is met; and in response to the determining that the predetermined condition is met, performing an action having an effect on the indication of the notification.

Abstract: A solution for training guidance is provided. A method related to the solution includes acquiring, in a training guidance apparatus, cardiovascular data representing cardiovascular measurement on a user carrying out a physical exercise, wherein the acquired cardiovascular data is real-time data measured during the physical exercise. The method further includes determining exercise guidance attributes from the cardiovascular data with respect to at least one training target of the physical exercise, selecting a video clip matching with the guidance attributes, and causing display of the video clip to the user.

Abstract: An apparatus includes a housing and a fixing mechanism configured to attach the housing to an object. The housing includes a display device and at least one processor configured to receive measurement data in a measurement mode during a physical exercise, to process the received measurement data, thus generating exercise data characterizing the exercise, and to display the exercise data through the display device during the physical exercise. The display device is configured to provide a plurality of display view orientations associated with different rotation angles between a first display view orientation, defined by attachment of the fixing mechanism to the object, and a 90-degree rotation from the first display view orientation. At least one function of the processor is associated with the rotation of the display view.

Abstract: There is provided a wearable item configured to be placed at least partially against a skin of a person; and an optically sensitive detector mounted to the wearable item and configured to detect optical signals reflected from the skin of the person, wherein the detected optical signals represent a relative motion between the wearable item and the skin of the person and wherein the optically sensitive detector is mounted to the wearable item such that there is a predetermined space between the optically sensitive detector and the skin of the person.

Abstract: A method includes acquiring physiological exercise data from a plurality of physiological exercise sensors applied by a group of exercisers; determining a performance metric for each exerciser on the basis of the acquired physiological exercise data; detecting whether or not a predetermined common target is met on the basis of the performance metrics; and triggering an event upon detecting that the predetermined common target is met.

Abstract: A training device includes a communication circuitry configured to communicate according to Bluetooth specification, at least one processor, and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the device to perform operations. The operations include obtaining physical activity-related measurement data of a user participating in a team sport activity, processing the physical activity-related measurement data into a physical activity-related information characterizing the physical activity of the user during the team sport activity, and broadcasting, according to the Bluetooth specification, the physical activity-related information using the communication circuitry.

Abstract: A multi-function button is provided for a wearable device. A method includes associating, by at least one processor of the wearable device, operation of a button of a user interface of the wearable device with a quick-launch function of a computer program application stored in the wearable device, wherein operation of the button in a state where the computer program application is not being executed and where an icon identifying and enabling launch of the computer program application is not being displayed causes launch of the computer program application; and detecting, by the at least one processor while the computer program application is being executed, operation of the button and, in response to the detection, causing execution of a function of the computer program application.

Abstract: A system for processing heart rate measurement data measured during a physical exercise of a user. The system includes a server computer configured to: associate, during a registration procedure for a measurement device of a user, a device identifier of the measurement device with a user account of the user stored in the server computer; receive a device identifier and real-time heart rate measurement data over a network connection; identify the user's measurement device from the received device identifier; and store the received heart rate measurement data to the user account of the user on the basis of the association between the received device identifier and the corresponding user account.

Abstract: A method for alertness control of a vehicle operator includes obtaining, by an apparatus, physiological status data of a person acquired using at least one sensor including at least a biosignal sensor; determining, based on at least the physiological status data, at least one alertness value being indicative of alertness level of the person; determining, by comparing the at least one alertness value to at least one alertness reference value, whether the alertness level of the person is below a threshold alertness level for operating the vehicle; and as a response to the determining that the alertness level is below the threshold alertness level, causing an output of a control signal.