A method and apparatus for routing frames through a fiber channel fabric to make the most efficient possible use of redundant inter-switch links between neighboring switches. It can receive decorations such as ribbons and bows, greeting cards such as a tofrom card, and the like. The Traction Pads stack upon each other, are light-weight, and easily set upon the tires, as they are shaped to the same contour as the tires. By setting folding points describing the folding area, only information for the folding area and the folding points is encoded. Accordingly, energy efficiency is improved. The antenna unit includes an elongated ferrite core having a first length and an antenna coil wound around the ferrite core, and is configured to communicate with an external unit using inductive coupling of a magnetic field.