A throw-off device for use on a drum having a side wall and a head, a support body attachable to the side wall of the drum, a tensioning member movable relative to the body to tension or release strands adjacent the drum head, a lever movable between selected positions, and cam and follower roller elements that are relatively movable in response to lever movement to effect member movement. In one exemplary method, a mobile device having a currently inserted SIM card may be prepared for activation using a signing process in which an activation server generates a signed activation ticket that uniquely corresponds to the combination of the device and SIM card, and that is securely stored on the mobile device. The second task is different from the first task. The information offered in the ticker is interactive so that it allows the user to customize this abbreviated data and how the data is presented. The at least one second error correction unit performs the second error correction according to a second iterative decoding algorithm which uses a message having a larger number of quantization bits than that of the first iterative decoding algorithm.