mainly to solve the traditional seal lack of security.

Traditional sources of container seals can be divided into three categories: the owner (shippers), shipping companies and customs. The seal is to avoid multi-purpose container that may occur in transit is substitution, the risk of theft. However, this seal because of the need to distinguish visually, it is inevitable because of human negligence or intentional or unintentional falsification, making it impossible to play the desired effect, or even a significant loss, there are a lot of trouble, and in order to solve these traditional seals brought to the problem, led to the mass production of electronic seals. With the emergence of the world on different types of common electronic seal meter has the following two ways: the first one is relying on memory cells and the number of the random number generator seal, the seal main function is to provide logistics processes doors, warehouse or container switch record, which records can be read via infrared, the advantages of the seal is reusable. In addition, there is another combination of traditional container seals and radio frequency identification technology, combined with a disposable seal. The use of radio frequency identification seal uniqueness and difficult to counterfeit features, reduce the risk of containers being Diaobao. Demands at least not solid seal or seal is broken, the radio frequency identification electronic tags should not be read, and sealed under normal solid state, you can use the reader (reader) to read electronic tag content or code while reading from this type of seal from three meters to a hundred meters range.