US Patent RE47533 Method and system of securing accounts

A method and system of securing account is provided. When a client computer requests access to an account accessible via a server, the server determines a MAC address associated with the client computer and compares it to a MAC address associated with the account. If the MAC address of the client computer is not the same as the MAC address associated with the account, the server initially denies access to the client computer, but may allow access after verification of the client computer by the user associated with the account.