Index 351 implicit 222 legislation 47 selecting 222 library 80 input device 216, 220 lifebase 338 dedicated keys 221 Lifeblog 241, 270 keypad 220 Linux 172, 279 pointing 221 Local area network (LAN) 27 scroll wheel 221 location aware application 290 sensor 222 location softkey 220 as metadata 294 touch sensitive display 221 as social information 295 input focus 234 mobility 65 instance metadata 160 tracing 295 instance object 158 location-aware application 290 integer (data type) 175 location-aware games 307 interaction 201, 222 location-based applications 289 interaction history 148 location-dependent content 65 interaction style 216 long tail 71–2, 304 direct manipulation 216 long-term memory 203 form fi lling 216 loops 105 menu selection 216, 225 LP 39 interactive cycle 201 M interactive system 201 interchangeable (devices) 32 Machine Readable Catalogue (MARC) Internet 34 100–1, 117 Internet Engineering Task Force (IETF) 122 machinima 312 Internet Media Type (IMT) 102, 107 main pane 223 internet radio 35 maintaining content 74 Internet relay chat 263 malicious software 29, 97 interoperability, application 120, 150–1 MARC21 101 interviewing 205 mashup 209 IPTC 103, 107, 141, 156, 183 Massive Multiplayer Online Games iterative design 206 (MMOG) 308 J Massive Multiplayer Online Role Playing Games (MMORPG) 308, 316 Java 20 Matrix Browser 258–9, 272, 329 K media streamer 119 Media Tray 229, 257–8 Kazaa 41 memory consumption 190 keypad layout 220 memory prosthesis 337 knowledge presentation 91 memory, human 203 L mental model 203 menu selection interaction style 216, 224, landmark 290 225 laptop pc 22 metadata 63, 79, 81, 140 LCD 218 metadata engine 173–4 learnability 253 example 192–4