An advertising terminal (12) and a network of advertising terminals are described. The advertising terminal may be an ATM (12b). The ATM (12b) comprises a transceiver (80) for wireless communication with portable devices (26,28) in the vicinity of the ATM (12b). The ATM (12b) is operable to create a profile of persons in the vicinity of the ATM (12b) by detecting portable devices such as PDAs (26) and cellphones (28) that have a wireless communications facility (26a,28a) and identifying the owners of the portable devices. The ATM is also operable to display an advertisement appropriate for the created profile of persons.