Abstract: A real-time belt tension sensing system includes an engagement assembly that is adapted to remain in substantially continuous contact with a belt that is being driven in a conveyance or drive direction. As the belt is driven in the drive direction, it simultaneously causes the position of the engagement assembly to move in a slack direction that is substantially perpendicular to the drive direction. A tension sensor produces a slack position signal based on the current position of a portion of the engagement assembly. The slack position signal is transmitted to a controller or control circuit in electronic communication with the tension sensor. The control circuit interprets the slack position signal to produce a tension measurement.

Abstract: A system and method for identifying and tracking recipient behavior in connection with a multimedia presentation incorporated in an email. The email is received in the manner of an ordinary text email, but when the email is opened, it automatically commences the display of a multi-media presentation that includes streaming video that provides information about the viewing experience to the sender. When the recipient elects to open the email message, the recipient's computer is identified to the sender and correlated with information relating to the recipient's interaction with the program. Such information can include the portions of the program viewed by the recipient and the length of time each portion is viewed, and the identity of any recipient to whom the information is forwarded.