Time to hit a target depends on how far away it is and how big it is, which makes size and distance the two levers you control.
Law · Motor control
Tag
touch
Entries tagged touch, drawn from across the library. Tags cut through the section structure, which is where most of the useful connections are.
6 entries across 5 sections
Type
Category
Level
6 entries
Distinct layouts for distinct contexts, justified when the task genuinely differs rather than merely the screen size.
UI foundation · Layout
Selecting from a continuous range, which is imprecise by nature and needs a numeric partner.
Component · Forms
The conventions phones have settled on, what each one is actually for, and where they break.
Pattern · Structure
Interactive targets need to be large enough and spaced enough to hit reliably.
Accessibility · Operable
Touch targets, reach, input, performance and the assumptions that only fail on a phone.
Checklist · Mobile