Index_P

P

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.