While the book focuses on physical design, most of the content applies equally when it comes to digital computer interfaces. A heavier focus on affordances, signifiers, mapping (and all the other concepts introduced by Norman) by proclaimed UX experts would make most web UIs so much more usable.
Norman has also been involved in the whole UX movement for interfaces since... well, the beginning, since he was the first person who even had "User Experience" in their job title (when he started working at Apple).
Norman has also been involved in the whole UX movement for interfaces since... well, the beginning, since he was the first person who even had "User Experience" in their job title (when he started working at Apple).