The invention relates to an overhead conveyor for poultry, for example chickens, having a conveyor line, and along the conveyor line movable hooks suspended therefrom with holders for the ends of the poultry’s legs. A through-silicon via is formed from a back side of the support and passing through the silicon-on-insulator wafer to reach the interconnect layer. The device memory stores first and second portions of security information used for authentication. A list of participants in the existing conference is determined. The controller controls the cutting blade section so that an amount of movement from a standby position of the cutting blade to the stop position becomes great when the number of times of cutting operations is increased.