Abstract: A body wearable personal network server device has a display, function keys, alarm output indicators, a disk driver to receive and store clients' data, and communication devices to communicate to its clients, such as mobile phone, personal digital assistant (PDA), personal computer, and notebook computer. A body wearable personal network device also contains software modules; such as a protocol handler to handle Internet based protocols XML/FTP/HTTP/TCP/IP, diagnostic system to automatically transmit of notification messages to its clients, and various applications to provide various services for its clients. A body wearable personal network device has gate way functionality between PAN (using Bluetooth) and WLAN (using IEEE802.11b).