A speed reducing mechanism includes: a driven member; and a decelerating member transmitting a drive force from an actuator to the driven member. The first processor divides the private crypto-key into two portions, a first private key portion, based upon a user’s password, and a second private key portion. If any agents are available, the routine may schedule a pre-defined number of calls per available agent. Upon activating the given virtual machine on a given core after writing of the interrupt message, a context of the given virtual machine is copied from the memory to the given core, and a hardware interrupt is automatically raised on the given core responsively to the interrupt message in the memory. The hoop having a ring having an inward face, an outward linear plane face, a top edge, and a bottom edge, wherein the inward face is stepped such that the bottom edge has a width less than the width of the top edge and a shoulder is formed therebetween. The method is based on the exploitation of discrete sampling of the information provided from the devices of the invention and allows the feeding of these devices to be modulated in order to activate the devices only when necessary.