Label for identifying package and method thereof

A label (108, 118) for identifying a package (100) in a plant. The tag (108, 118) comprises: a first circuit (110) and a second circuit (112) for converting an electromagnetic field into a current to generate electrical energy; and a controller (114) powered by the electrical energy, where the controller (114) comprises a processor (202) and a memory (304) configured to store an identification code, where the controller (114) is connected to the first circuit (110) and the second circuit (112); wherein the first circuit (110) faces a first surface (102) of a package (100), the second circuit (112) faces a second surface (104) of the package (100), the first surface (102) is provided with a first normal (202), the second surface (104) is provided with a second normal (204), and the first normal (202) and the second normal (204) are inclined by an included angle alpha. 用于识别工厂中的包装(100)的标签(108、118)。标签(108、118)包括：第一电路(110)和第二电路(112)，其用于将电磁场转换为电流以产生电能；以及控制器(114)，其由所述电能供电，其中所述控制器(114)包括处理器(202)和被配置为保存识别码的存储器(304)，其中