Activities within a workflow are either data management activities or non-DMAs. The first frame member covers the peripheral region of the liquid crystal display element and has hooks for engagement with the recess in metal body. In cases where the awareness information included in the packet has already been accounted for, the packet may be ignored. Also, the operation speed in switching potentials can be improved. A decryption processor is coupled to read and decrypt the encrypted data from the input memory but is incapable of writing to the input memory, and is coupled to convey the decrypted data to the output transducer for presentation to the user.