Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [Y] [Z] Pangaro, Paul paper prototypes patterns people, service perceived affordances Perplex City personal ambient devices personal digital assistants (PDAs) personalization personas perspective 2nd phenomena photo/video journals physical prototypes physical space physical-only controls pitch playing with products/services pleasurable products/services Poka-Yoke Principle power distance Preferences window (MS Word) presence-activated systems presentation soft ware primary colors primary personas privacy issues 2nd 3rd problems process maps processes, service products vs. services project definition business goals constraints design briefs information gathering stakeholder interviews prototypes 2nd digital 2nd paper physical service testing prototyping soft ware Psychology of Everyday Things, The (Norman) public ambient devices 2nd punch cards |