An electronic package includes a substrate having a contact pad thereon, a reformable member such as a solder ball positioned on the contact pad, and an elastic member positioned around the reformable member. The optical resonator waveguide has a resonant frequency, exhibits a first index of refraction, temporarily exhibits a second index of refraction responsive to application of laser energy, and temporarily resonates at the resonant frequency while the laser energy is being applied. Usage rights for devices in the network are determined using the location or proximity determination. The annular pool is formed by a cylindrically shaped dike secured to the upper portion of the gear. 0% of Si; and, as an element M, one member selected from 0. By the indication light, the periphery of the car is lighted up so that cars at the periphery of the car can keep attention to the state of the car to prevent from collision due to weak view.