A method, apparatus and system for pre-authenticating ports is disclosed. The channel region has a resistance characteristic that changes depending on the level of accumulated charge in the accumulation region. The pocket and pivot member arrangement allow the cover plate to be rotated relative to a cable trough to which the hinge pieces may be mounted. The hand piece includes a vaporization chamber where herbs are packed, an inlet for connecting with the mating section of the shield, and an outlet for inhalation by a user. The secured straps firmly hold the shoulder pad in place on the wearer’s body.