Abstract: The systems, methods and apparatuses described herein provide an apparatus configured for ensuring proximity of a communication partner. In one aspect, the apparatus may comprise a communication port and a processor. The processor may be configured to send a request to and receive a response from the communication partner via the communication port using modulated signals, measure a time period between sending and receiving using timings of modulated signals' symbols, and receive a secondary value from the communication partner. The secondary value may be verified to include at least a portion of the request and a portion of the response, and may have been sent with authenticating data to authenticate it. The time period may be compared with a predefined threshold calculated based on a predefined maximum allowed distance to the communication partner. In another aspect, an apparatus may be configured to ensure its proximity to a communication partner.

Abstract: The systems, methods and apparatuses described herein provide a footwear hydraulic system for harvesting power generated by pressing a foot on a surface and providing a cushion for the impact. In certain aspects, a hydraulic system for a footwear may comprise at least one chamber with a first and second compartments separated by an elastic membrane. The first compartment may be filled with gas and the second compartment may be filled with liquid. The gas may provide impact cushion and transient energy storage, and the liquid may pressured to push a generator to produce energy. The pressure may be generated by pressing the footwear on a surface and/or the elastic membrane of the chamber trying to restore its shape.

Abstract: The systems, methods and apparatuses described herein provide an apparatus configured for ensuring proximity of a communication partner. In one aspect, the apparatus may comprise a communication port and a processor. The processor may be configured to send a request to and receive a response from the communication partner via the communication port using modulated signals, measure a time period between sending and receiving using timings of modulated signals' symbols, and receive a secondary value from the communication partner. The secondary value may be verified to include at least a portion of the request and a portion of the response, and may have been sent with authenticating data to authenticate it. The time period may be compared with a predefined threshold calculated based on a predefined maximum allowed distance to the communication partner. In another aspect, an apparatus may be configured to ensure its proximity to a communication partner.

Abstract: The systems, methods and apparatuses described herein provide an apparatus configured for ensuring proximity of a communication partner. In one aspect, the apparatus may comprise a communication port and a processor. The processor may be configured to send a request to and receive a response from the communication partner via the communication port using modulated signals, measure a time period between sending and receiving using timings of modulated signals' symbols, and receive a secondary value from the communication partner. The secondary value may be verified to include at least a portion of the request and a portion of the response, and may have been sent with authenticating data to authenticate it. The time period may be compared with a predefined threshold calculated based on a predefined maximum allowed distance to the communication partner. In another aspect, an apparatus may be configured to ensure its proximity to a communication partner.

Abstract: The systems, methods and apparatuses described herein provide an apparatus configured for ensuring proximity of a communication partner. In one aspect, the apparatus may comprise a communication port and a processor. The processor may be configured to send a request to and receive a response from the communication partner via the communication port using modulated signals, measure a time period between sending and receiving using timings of modulated signals' symbols, and receive a secondary value from the communication partner. The secondary value may be verified to include at least a portion of the request and a portion of the response, and may have been sent with authenticating data to authenticate it. The time period may be compared with a predefined threshold calculated based on a predefined maximum allowed distance to the communication partner. In another aspect, an apparatus may be configured to ensure its proximity to a communication partner.

Abstract: The systems, methods and apparatuses described herein provide an apparatus configured for ensuring proximity of a communication partner. In one aspect, the apparatus may comprise a communication port and a processor. The processor may be configured to send a request to and receive a response from the communication partner via the communication port using modulated signals, measure a time period between sending and receiving using timings of modulated signals' symbols, and receive a secondary value from the communication partner. The secondary value may be verified to include at least a portion of the request and a portion of the response, and may have been sent with authenticating data to authenticate it. The time period may be compared with a predefined threshold calculated based on a predefined maximum allowed distance to the communication partner. In another aspect, an apparatus may be configured to ensure its proximity to a communication partner.

Abstract: The systems, methods and apparatuses described herein provide a footwear hydraulic system for harvesting power generated by pressing a foot on a surface and providing a cushion for the impact. In certain aspects, a hydraulic system for a footwear may comprise at least one chamber with a first and second compartments separated by an elastic membrane. The first compartment may be filled with gas and the second compartment may be filled with liquid. The gas may provide impact cushion and transient energy storage, and the liquid may pressured to push a generator to produce energy. The pressure may be generated by pressing the footwear on a surface and/or the elastic membrane of the chamber trying to restore its shape.

Abstract: The systems, methods and apparatuses described herein provide a footwear hydraulic system for harvesting power generated by pressing a foot on a surface and providing a cushion for the impact. In certain aspects, a hydraulic system for a footwear may comprise at least one chamber with a first and second compartments separated by an elastic membrane. The first compartment may be filled with gas and the second compartment may be filled with liquid. The gas may provide impact cushion and transient energy storage, and the liquid may pressured to push a generator to produce energy. The pressure may be generated by pressing the footwear on a surface and/or the elastic membrane of the chamber trying to restore its shape.

Abstract: The systems, methods and apparatuses described herein provide an apparatus configured for ensuring proximity of a communication partner. In one aspect, the apparatus may comprise a communication port and a processor. The processor may be configured to send a request to and receive a response from the communication partner via the communication port using modulated signals, measure a time period between sending and receiving using timings of modulated signals' symbols, and receive a secondary value from the communication partner. The secondary value may be verified to include at least a portion of the request and a portion of the response, and may have been sent with authenticating data to authenticate it. The time period may be compared with a predefined threshold calculated based on a predefined maximum allowed distance to the communication partner. In another aspect, an apparatus may be configured to ensure its proximity to a communication partner.

Abstract: The systems, methods and apparatuses described herein provide a footwear hydraulic system for harvesting power generated by pressing a foot on a surface and providing a cushion for the impact. In certain aspects, a hydraulic system for a footwear may comprise at least one chamber with a first and second compartments separated by an elastic membrane. The first compartment may be filled with gas and the second compartment may be filled with liquid. The gas may provide impact cushion and transient energy storage, and the liquid may pressured to push a generator to produce energy. The pressure may be generated by pressing the footwear on a surface and/or the elastic membrane of the chamber trying to restore its shape.