352 Personal Content Experience: Managing Digital Life in the Mobile Age metadata framework 153 pure 146 access control 194 quality 335 architecture 154 relations 145–7 communication manager (CM) 188, 189 semantics 82, 86, 117, 327 components 172 standards 99 context engine (CE) 172, 185 tag 83, 141–2 example usage 192 terms (Dublin Core) 102 harvester manager 172, 184 unintentional disintegration 85 initialization 161 uniqueness 85 memory consumption 190 universal 116–7 metadata engine (MdE) 172, 173 usage history 113, 147, 148, 194 performance 189 user benefi ts 93 persistent storage 172 uses 94–9, 325 prototype 171 metadata instance 160 queries 176 metadata lifecycle 154–5 script engine for context engine 187 metadata magic 326 scripts 188 metadata management 129, 132, 149, 153 speed 191 key requirements 149 metadata storing 150, 157 ambiquity 81 metadata manifest 152, 156 attribute 140, 159, 301, 325 metadata object 158, 174, 175 automation 336 property defi nition 175 categorization 83–4, 141 metadata processor 194–5 challenges 116–7 metadata schema 160 composer 156 meta-metadata 148 context capture 143, 194 meta-search 256 creation 86, 87, 88, 325, 329 microformat 117 defi nition 81 micro-history 67 derived 87, 93 micromechanics 31 direct 93 micromovie 212 event 147–8 micropayment 70 extensibility 117, 149 Microsoft XBOX 360 Live 119 format 100, 111 miniaturization (of electronics) 26, 31 harvester 93, 154, 183 minidisk (MD) 40 indirect 93 MiniMap 230 interaction 88, 148 mischievousness 117 interoperability 118, 148, 335 mobile application 288 lifecycle 154 mobile compromise 26 location 294 connectivity 27 maintenance 91 miniaturization 26 management 148 power consumption 26 manual 86 size 26 misuse or abuse 85, 117, 325, 326, 336 mobile device 16, 111 ownership 150 mobile device categories 16 people as 1st class 92 mobile games 308 procedural 148 mobile music 38, 207–9