Abstract: An account processing method and system for providing specific pre-authorization parameters for transactions that require specific pre-authorization by a network user specifying conformity parameters within which any requested transaction parameters must comply in order to enable the requested transaction to be approved. Upon establishment of an account, transaction types by standard industrial code (SIC) are specified as needing specific authorization prior to approving the transaction as requested by a merchant An account issuer provides a service to account members that permits network user to independently specify the parametric conditions under which to approve a transaction within such categories. Once a transaction is approved, the pre-authorization is spent and requires individual pre-authorization of each transaction, thereby minimizing misuse of an account number by merchants or others that come into possession of the network user's account number.