Printers, PDA's, desktops, fax machines, key boards, joysticks and virtually any other digital device can be part of the Bluetooth system. Bluetooth supports both point-to-point and point-to-multi-point connections. Several piconets can be established and linked together ad hoc, where each piconet is identified by a different frequency hopping sequence. All devices participating on the same piconet are synchronized to this hopping sequence.