Abstract: A monitoring device, including an encasement having an upper part and a lower part; wherein the lower part is attached by a hinge at a first side of the encasement to the upper part; wherein at an opposite side the upper part can be lowered onto the lower part to close the encasement or lifted up to open the encasement; an elongated strap with a first end and a second end wherein the first end of the strap is attached to the first side of the encasement and configured to enable coupling the monitoring device to a person by wrapping the strap around a limb of a person, and inserting the second end of the strap into the opposite side of the encasement onto the lower part and covering it with the upper part.

Abstract: A tracking device, including a communication interface encased in a encasement with a receptacle on two opposite sides of the encasement, a strap, including one or more thin elongated flexible sheets, links coupled to one side of the one or more thin elongated flexible sheets, a fiber optic cable extending from a first end of the one or more thin elongated flexible sheets to a second end of the one or more thin elongated flexible sheets, a head connected to each end of the one or more thin elongated flexible sheets; wherein the heads are configured to fit into the receptacles and lock the strap in the receptacles thus preventing the strap from sliding out of the receptacles; and wherein the communication interface is configured to detect tampering with the strap by transmitting an optical signal through the fiber optic cable.

Abstract: A document liveness detection method comprising using a hardware processor for prompting an end-user of an electronic device, having a camera, to provide an image sequence of a physical document whose orientation is undergoing change; and image-processing the image sequence to yield an output indication of whether or not the image sequence was generated by capturing a live or physical document; and providing the output indication to at least one computerized system or human.

Abstract: A tracking device, including a communication interface encased in a encasement with a receptacle on two opposite sides of the encasement, a strap, including one or more thin elongated flexible sheets, links coupled to one side of the one or more thin elongated flexible sheets, a fiber optic cable extending from a first end of the one or more thin elongated flexible sheets to a second end of the one or more thin elongated flexible sheets, a head connected to each end of the one or more thin elongated flexible sheets; wherein the heads are configured to fit into the receptacles and lock the strap in the receptacles thus preventing the strap from sliding out of the receptacles; and wherein the communication interface is configured to detect tampering with the strap by transmitting an optical signal through the fiber optic cable.

Abstract: A method for determining a location of a wireless tag, the method may include generating or receiving, by a tagged mobile device, an estimated location of another tag that communicates with the tagged mobile device; receiving or generating, by the tagged mobile device, multiple distance measurements that are obtained during different points of time; wherein the multiple distance measurements are obtained during a rotational movement of the tagged mobile device and represent distances between the tagged mobile device and the other tag; finding a certain angle of rotation of the mobile device that corresponds to a minimal distance measurement of the multiple distance measurements; and amending the estimated location of the other tag based upon the certain angle of rotation.

Abstract: A method for managing a sphere of wireless tags, the method comprises programming, by a wireless reader, a group of wireless tags to belong to the sphere of wireless tags; sending by the wireless reader sphere beacons aimed to the wireless tags of the sphere; detecting a loss of a wireless tag of the sphere if the wireless tag did not respond to a predetermined number of sphere beacons; and responding to the detecting of the loss of the wireless tag.

Abstract: Method for determining a distance between a first wireless transceiver of a first device and a second wireless transceiver of a second device, the method may include sending, by the first wireless transceiver and to the second wireless transceiver, (i) a first wideband message that consists essentially of a first synchronization preamble and (ii) a first narrowband message that may include first ranging information and does not include the first synchronization preamble; receiving, by the first wireless transceiver and from the second wireless transceiver, (i) a second wideband message that consists essentially of a second synchronization preamble and (ii) a second narrowband message that may include second ranging information and does not include the second synchronization preamble; and calculating, by the first device and based on portions of the first and second ranging information, a first estimate of the distance between the first wireless transceiver and the second wireless transceiver.

Abstract: A method for determining a location of a group of wireless tags, the method may include receiving first information indicative of distances between each wireless tag of the group and between at least three other wireless tags of the group; tracking a first movement of a certain tag of the group of wireless tag in relation to other wireless tags of the group to provide first movement information; receiving, after the performing of the first movement, second information indicative of distances between each wireless tag of the group and between at least three other wireless tags of the group; and determining locations of the wireless tags of the group in response to the first information, second information and the first movement information.

Abstract: A method for determining a location of a wireless tag, the method may include generating or receiving, by a tagged mobile device, an estimated location of another tag that communicates with the tagged mobile device; receiving or generating, by the tagged mobile device, multiple distance measurements that are obtained during different points of time; wherein the multiple distance measurements are obtained during a rotational movement of the tagged mobile device and represent distances between the tagged mobile device and the other tag; finding a certain angle of rotation of the mobile device that corresponds to a minimal distance measurement of the multiple distance measurements; and amending the estimated location of the other tag based upon the certain angle of rotation.

Abstract: A method, that may include determining, by a wireless reader, at least one locations of at least one wireless tag; determining, by a mobile device, which wireless tag out of the at least one wireless tag is a viewable wireless tag that is within a field of view of a camera of the mobile device; wherein the mobile device is either coupled to the wireless reader or comprises the wireless reader; and providing, by the mobile device, for each viewable wireless tag, a viewable wireless tag indication that is indicative of a location of each viewable wireless tag.

Abstract: A method for determining a location of a group of wireless tags, the method may include receiving first information indicative of distances between each wireless tag of the group and between at least three other wireless tags of the group; tracking a first movement of a certain tag of the group of wireless tag in relation to other wireless tags of the group to provide first movement information; receiving, after the performing of the first movement, second information indicative of distances between each wireless tag of the group and between at least three other wireless tags of the group; and determining locations of the wireless tags of the group in response to the first information, second information and the first movement information.

Abstract: A method for locating a user within an indoor space, the method comprises: receiving by a computer, distance information about distances between multiple wireless tags that are positioned within the indoor space; wherein the distance information is obtained by the multiple wireless tags during a first type of distance estimation process that comprises wirelessly transmitting messages between the multiple wireless tags; determining locations of the wireless tags in the indoor space in response to the distance information and to calibration information indicative of an actual or estimated location of at least one wireless tag in the indoor space; receiving, from a user device, user device location information related to a location of the user device in relation to a sub-set of the wireless tags; determining a location of the user device within the indoor space in response to the user device location information and to locations of the wireless tags of the sub-set of wireless tags in the indoor space.

Abstract: A method, comprising: generating or receiving information about multiple distance measurements of distances between the wireless tag and the wireless reader at different points of time; wherein the wireless reader is positioned at different locations in relation to the wireless reader at the different points of time; generating or receiving information about a spatial relationship between the different locations or receiving information indicative of the spatial; and determining the location of the wireless tag in response to the multiple range measurements and the spatial relationship between the different locations.

Abstract: A method for detecting a presence of a tagged item within a tagged enclosure, the method comprising performing distance measurements between at least one wireless tag of the tagged enclosure and the tagged item to determine the spatial relationship between the tagged enclosure and the tagged item.

Abstract: A method for managing a sphere of wireless tags, the method comprises programming, by a wireless reader, a group of wireless tags to belong to the sphere of wireless tags; sending by the wireless reader sphere beacons aimed to the wireless tags of the sphere; detecting a loss of a wireless tag of the sphere if the wireless tag did not respond to a predetermined number of sphere beacons; and responding to the detecting of the loss of the wireless tag.

Abstract: A method, comprising: receiving during a wideband reception period and by a wideband reception circuit of a first wireless transceiver a wideband ranging message; transmitting during a wideband transmission period and by a wideband transmission circuit of the first wireless transceiver a wideband ranging response message; receiving by a narrowband reception circuit of the first wireless transceiver received narrowband messages; and transmitting by a narrowband transmission circuit of the first wireless transceiver transmitted narrowband messages.

Abstract: A novel and useful mechanism for reducing the required backoff and the peak to average power ratio (PAPR) needed for an OFDM transmitter whiles still meeting spectral mask and EVM specifications. The mechanism searches, for each packet to be transmitted, for several possible scrambler and encryption sequences that would yield the best spectral mask and EVM with lowest PAPR. The search can be performed using the existing transmitter and receiver PHY circuit chain to modulate and demodulate the candidate hypotheses. Once the scrambler sequence and/or encryption sequence is selected, the packet is transmitted using the selected scrambler and encryption sequences. In addition, the invention exploits the fact that even for very low backoff margins, a reduced number of candidate hypotheses may be tested while still yielding a high probability of meet the spectral mask and EVM specifications.

Abstract: A novel system and method for correcting the residual phase offset between a recovered pilot signal and the received stereo signal. The invention uses a Costas loop as an auxiliary loop in addition to the pilot recovery phase locked loop (PLL) to lock onto the stereo component itself. This auxiliary loop functions to generate a pilot to stereo component phase correction signal that is added to the stereo carrier phase The resultant phase is used to generate the recovered pilot carrier used to demodulate the stereo MPX signal. The Costas loop is activated together with the main pilot recovery PLL that locks onto the pilot tone in the demodulated MPX signal. The auxiliary Costas loop is operative to track and determine a residual phase error of up to several degrees.

Abstract: A transmitter employing a sigma delta modulator having a noise transfer function adapted to shift quantization noise outside at least one frequency band of interest. A technique is presented to synthesize the controllers within a single-loop sigma delta modulator such that the noise transfer function can be chosen arbitrarily from a family of functions satisfying certain conditions. Using the novel modulator design technique, polar and Cartesian (i.e. quadrature) transmitter structures are supported. A transmitter employing polar transmit modulation is presented that shapes the spectral emissions of the digitally-controlled power amplifier such that they are significantly and sufficiently attenuated in one or more desired frequency bands. Similarly, a transmitter employing Cartesian transmit modulation is presented that shapes the spectral emissions of a hybrid power amplifier such that they are significantly and sufficiently attenuated in one or more desired frequency bands.