INDEX 421 H habits, networking, 20­21 handshake method flow control, 68­70 Happy Feedback Machine, 16­17 hardware object-oriented, x suppliers, 362­365 Hartman, Kate, 218­219 Hayes AT command protocol, 75 Head First Java, 166 header pins, 22­23 headers, 62, 326­339 heading, digital compass project, 284­287 Heathcote, Chris, 264 helping hands, 22­23 home automation project, RFID, 316­325 HTTP installation (continued) Processing, 24 Wiring, 37­39 instance variables, 164 interactive systems, timing, 148 interface module, X10, 318 interfaces, defined, 18 interference, radio, 184­185, 189 Internet Protocol (IP). See IP Internet, private IP devices, 245 IP addressing, 84­86 device, making visible to Internet, 245 geocoding project, 328­332 IR. See infrared iSight, 94 localhost address, 87 locating things distance ranging, active, 272­276 distance ranging, passive, 265­271 orientation, 284­292 overview, 262­265 trilateration, 277­283 logical layer, 50­54 London, Kati, 218­219 longitude, IP address, 328­332 loopback address, 87 Lotan, Gilad, 250­251, 259 M Mac OS X Bluetooth negotiation, 77 Bluetooth passkey, 74 network settings, 84­85 OpenSSH, 27 ping, 86­87 J JitterBox, 78­79