Abstract: A system for providing information to a user is described. The system includes a remote database communicating with a plurality of user devices. The remote database includes a plurality of media snippets and a clustering engine for clustering users of the plurality of user devices based on at least one user-related parameter and identifying a subset of media snippets from the plurality of media snippets most relevant to users of a cluster.

Abstract: A system for stimulating a muscle of a user, the system comprising: a stimulating unit comprising (i) at least two electrodes configured to be placed in electrical contact with skin of a user in a vicinity of the muscle, and (ii) a pulse generator configured to generate an electrical pulse for application to the muscle through the at least two electrodes; a sensing unit comprising at least one sensor configured to measure a physiological parameter of the user and generate a sensing signal in response thereto; and a control processor operatively coupled to the stimulating unit and to the sensing unit and configured to receive the sensing signal from the at least one sensor and change a parameter of the electrical pulse applied by the at least two electrodes in response to the sensing signal.

Abstract: A system for providing information to a user is described. The system includes a remote database communicating with a plurality of user devices. The remote database includes a plurality of media snippets and a clustering engine for clustering users of the plurality of user devices based on at least one user-related parameter and identifying a subset of media snippets from the plurality of media snippets most relevant to users of a cluster.

Abstract: A system for estimating an indoor speed of an individual is provided. The system includes a motion sensor attachable to an upper body of the individual and at least one processor being in communication with the motion sensor. The processor is configured for periodically prompting the user to provide a speed value or instructing the user to run/walk at a specific speed value, extracting features from data collected by the motion sensor that correspond to the speed value and calculating a speed of the individual from a probabilistic model.

Abstract: A system for estimating an indoor speed of an individual is provided. The system includes a motion sensor attachable to an upper body of the individual and at least one processor being in communication with the motion sensor. The processor is configured for periodically prompting the user to provide a speed value or instructing the user to run/walk at a specific speed value, extracting features from data collected by the motion sensor that correspond to the speed value and calculating a speed of the individual from a probabilistic model.

Abstract: An earbud for use with, for example, a media player or a smartphone is provided. The earbud includes a housing enclosing a speaker and an optical sensor positioned on the housing such that the optical sensor contacts a surface of tragus when the earbud is positioned in an ear with the speaker directed into an ear canal. The earbud further includes a stabilizing element attachable to the housing and configured for contacting a posterior wall of a cavum or incisura of the ear when the earbud is positioned in the ear with the speaker directed into the ear canal.

Abstract: System and methods for detecting one or more physiological parameters of a subject are provided. Detecting of physiological parameters can occur through a wearable device that can transmit and receive electromagnetic waves. The received electromagnetic waves are reflections from tissue of the subject. The reflections have motion and noise substantially removed. The one or more physiological parameters can be determined from the motion and noise removed signals.

Abstract: A system for obtaining physiological information from a user is provided. The system includes a headset having at least one earbud which includes an audio speaker and a sensor for obtaining physiological data from a subject when positioned against a tissue region of an ear. The system further includes a microcontroller for relaying physiological data obtained from the sensor over a wired connection as a raw signal.

Abstract: System and methods for detecting one or more physiological parameters of a subject is provided. Detecting of physiological parameters can occur through a wearable device that can transmit and receive electromagnetic waves. The received electromagnetic waves are reflections from tissue of the subject. The reflections have motion and noise substantially removed. The one or more physiological parameters can be determined from motion and noise removed signals.

Abstract: A Photoplethysmography-based sensor for measuring heart rate is provided herein. The sensor may include a first light source and a second light source configured to illuminate a body tissue by a first light and a second light respectively; and a first and a second light detectors, each configured to detect light comprising portions of said first light and of said second light, transferred through the body tissue; and a processor with an analog measurement part configured to: receive light intensity readings of at least a portion of light as sensed by each one of both sensors and coming from each one of both sources; and calculate a measure of tissue absorption based on ratios of light portions transmitted by each one of both sources and measured by each one of both detectors.