A solid-state imaging device includes photo-sensitive cells for converting incident light to signal charges, and a transfer path for transferring, in response to a drive signal fed through a transfer electrode, the signal charges read out from the photo-sensitive cells. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. A manual is provided for guiding a user through the decision making process. The barrier participates in a chemical reaction with the detonation byproducts to oxidize and burn. The base may be attached to the front of the palm protector. This description is not intended to be a complete description of, or limit the scope of, the invention.