Abstract: A heartbeat protocol communication method for an unmanned vehicle system, a method for secure hybrid cryptographic communication, and a method for encrypted communication during one or more communication sessions with a device are provided. The unmanned vehicle system includes an unmanned vehicle and a control platform and the method includes the unmanned vehicle transmitting heartbeat data at regular periodic predetermined time intervals, the heartbeat data comprising keep alive application data comprising real-time information pertinent to the unmanned vehicle and/or the control platform determining at regular periodic predetermined time intervals whether heartbeat data transmitted by the unmanned vehicle is received and the control platform transmitting an acknowledgement response to the unmanned vehicle each time the heartbeat data is received at a regular periodic predetermined time interval.

Abstract: An identification card with a planar member having a plurality of apertures formed therein and a plurality of prisms, each respectively mounted in one of the apertures so as to produce a refraction of a selected color of light transmitted through the aperture different from the refraction of a color of light transmitted through the other prisms in the plurality of other apertures.

Abstract: An identification card with a planar member having a plurality of apertures formed therein and a plurality of prisms, each respectively mounted in one of the apertures so as to produce a refraction of a selected color of light transmitted through the aperture different from the refraction of a color of light transmitted through the other prisms in the plurality of other apertures.