Typically, this individual is also responsible for payment of all charges made to that card. Corporate cards are an exception to this rule. This institution is also responsible for billing the cardholder for charges. Normally, this will be by agreement with the Issuer of the card in question.
Many issuers are also acquirers.
Some issuers allow other acquirers to provide authorizations for them, under pre-agreed conditions. Other issuers provide all their own authorizations. Most of it is of interest only to mechanical engineers. It defines the location and size of the magnetic stripe, signature panel, and embossing area. This standard also includes the Luhn formula used to generate the check digit for the PAN, and gives the first cut at identifying card type from the account number.