This disclosure relates to a modified transfer-roll system and method for electrophotographic printing or the like. In various embodiments, a sensor, such as a grip sensor, an inertial sensor, or a pressure sensor included in the video-capture device, or an optical flow algorithm that quantifies visible shake may be used to detect when the video-capture device is disposed on the supporting surface. In this case, the rotor has a cylindrical member and a magnet and can transmit generated rotation directly to the rotary slide member. The method further includes providing the message for transmission over an 80 MHz bandwidth.