IP-address
IP-addresses permit a logical addressing of computers in the internet.
By the indication of the IP-address you can reconstruct, from which PC the financial transaction was proceeded.
IP-addresses appear normally as numerical order of four numbers, which are separated by a point, e.g. 192.168.0.34 or 127.0.0.1.
Please note the fact that your IP-address can change with each dial-up via your DSL, ISDN or modem connection.