A driving circuit for an electro-luminescence cell includes an EL cell, and a supply circuit selectively applying current to the EL cell based on a pixel signal from a data line. The neighbors may be ranked according to the number of alternate paths that the neighbor has historically been able to provide on the network. A wireless tether apparatus may be configured such that when separated from a base unit greater than a predetermined distance, such a wireless tether apparatus provides information to the user of the wireless tether apparatus to aid a user such as a human, animal, or machine in finding their way back to a desired location. This type of bonus scheme adds excitement to bonus rounds and increases player entertainment. A container lockdown mechanism includes a securement member attached to the trailer, an attachment member, and an extension member extended between the container and the securement member to hold the container on the trailer. The receiver and the transmitter are disposed next to one another on a substrate.