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Palatsi, Mikko, 74, 78
Paper prototyping, 171–187
advantages of, 178–180
critical use cases in, 173
definition of, 179
localization in, 174, 176
phases of, 184, 185
prepiloting sessions for, 173
prototype used in, 173–175
repeating tests with, 184
results of, 181–183
scheduling for, 176–178
subject-prototype relationship in, 180–181
team for, 173, 176
time required for, 184, 186
Parallel representation, 3
PCs, 2
PCS (Personal Communications Services), 285
PDAs (personal digital assistants), 107
PDC (Personal Digital Communication), 287
Personal Communications Services (PCS), 285
Personal digital assistants (PDAs), 107
Personal Digital Communication (PDC), 287
Personalization, 11, 12, 41, 259–262
Petersen, Søren Jenry, 79–80
Phonebook application, 27, 256–257
Physical contexts, 120–121
Platform usability group, 235–237
Pluralistic walkthroughs, 237
Polson, Peter, 237
Portability, 2–3, 11, 268–269
Portfolio, UI, 151
Portuguese, in screen menu, 65
Power key, 76
Practical utility (of products), 276–279
Premium phones, 19, 25
Prepiloting sessions, 173
Presentation (of design concepts), 141
Principles, design:
design for development stability, 283–284
fragmented minds—do not standardize, 269–273
the more you polish the better it gets, 279–283
small user interfaces do not scale, 268–269
strive for a seamless user experience, 273–276
think by doing, 276–279
Prioritization:
of features, 260
of functions, 269
Privacy, 262–264
Proactive research, 137
Procedural knowledge, 117
Process definitions, 241–242
Products:
categories of, 17
continuous changes in, 122–123
creation process for, 241–242
marketing of, 140
practical utility of, 276–279
segmentation, product, 42–43, 142–143
smart, 250
social context of, 122–124
socially constructed meaning of, 93
substitute, 142
technology benefits to, 1
Prototypes:
horizontal/vertical functionality in, 174
interactive, 148, 206
(See also Paper prototyping)
Psion, 34n.
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