As everywhere else in this book, good UX is about designing for real users in context. Technology-wise, it’s starting to feel like the old days: “ best viewed in Netscape Navigator” or “download Flash to view this.” Just as we’re finally moving away from restrictive technologies in the desktop world, we’re into it on mobile. it’s useful to remember that users don/t have a choice as to what device to use – they own one phone. They might not want to install an app for a single interaction, especially if they’re off WiFi