A first account number and a second account number are created for an account ( 102).

The first and second account numbers are associated with the account (102)and can be used for transactions with the account (102).

A first subset of operations is associated with the first account number and a second subset of operations is associated with the second account number.

A first account number and a second account number are created for an account ( 102).

According to an embodiment, in a first storing system,a record corresponding to an account number ID is stored.In the record, a primary key is the account number ID, and a value is an account number mode and an account number name of the account number.

In the record, a primary key is the account number mode and the account number name of the account number,and a value is the account number ID.

The system generates a dynamic account number corresponding to a true account number of an account of a user and sends the dynamic account number to the user.

the account number (or functional equivalent in the absence of an account number

the account number (or functional equivalent in the absence of an account number

the account number (or functional equivalent in the absence of an account number

the account number (or functional equivalent in the absence of an account number

Account number / Credit card number

Account number or IBAN/credit card number, expiry date and security number of the credit card

The proxy number being generated resembles the customer account number; and embedded therein is a code number derived at least in part on the customer-related secret and an associated date and time stamp.

The account identification includes a customer account number.