A seal assembly includes a cloth seal for sealing a cavity between a first mating body and a second mating body, the seal dividing the cavity into a high pressure region and a low pressure region. The hierarchy information includes at least two sets of identification codes and defines at least two groups of identification codes. The client system comprises a device fingerprint identifiable by the third party administrator, wherein the third party administrator computer system administers the purchase and sale transaction based on receiving account and payment account information associated with the internet content provider and the client system, respectively. The theaters can be unmanned and can be configured to allow a user to select video or audio that is sent over a high speed broadband connection.