The present invention provides a base station whereby efficient resource allocation for data signals is realized. In one example, the method begins when an optical signal is generated. A remote server stores a unique identifier for the information and associates an encryptiondecryption key pair and access policies with the information. A reflective electrode having a transmission window exposing a portion of the transparent electrode is formed on the transparent electrode. In addition, the slide is installed inside the casing body near the first holes, wherein the end of the slide extends out of the casing body.