Some embodiments, among others, include a search for sensitive information. A pad can be attached to the tool head with one or more of a retainer, rubber bands and clips. The method feeds filament or staple yarn into different selected positions in the spinning triangle upon the tension interchange to rapidly spin two different structured yarns, therefore, enriches variety of the woven fabric and increase the industrial value. In addition, the transport stream may be decrypted, transrated to another rate, and re-encrypted using a different control word for re-encrypting, but a same service key to encrypt the different control word. A sound hole is formed in the cover or the package base so as to allow the internal space of the package to communicate with the external space.