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: 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: A system for determining a life threatening condition of a human may include at least one mobility sensor couplable to a human body and configured to measure mobility parameters of said human body; at least one physiological sensor couplable to a human body and configured to measure physiological parameters of said human body; at least one environmental sensor configured to measure environmental parameters indicative of an environment of said human body; and a computer processor configured to apply a decision function configured to determine a predefined life endangering condition of said human body, based on said measured mobility, physiological, and environmental parameters, and statistical relationship therebetween.

Abstract: A system for determining a life threatening condition of a human may include at least one mobility sensor couplable to a human body and configured to measure mobility parameters of said human body; at least one physiological sensor couplable to a human body and configured to measure physiological parameters of said human body; at least one environmental sensor configured to measure environmental parameters indicative of an environment of said human body; and a computer processor configured to apply a decision function configured to determine a predefined life endangering condition of said human body, based on said measured mobility, physiological, and environmental parameters, and statistical relationship therebetween.

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.