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
mobile
Entries tagged mobile, drawn from across the library. Tags cut through the section structure, which is where most of the useful connections are.
23 entries across 7 sections
Type
Category
Level
23 entries
A capability that users cannot find does not exist, no matter how well it is built.
Principle · Interaction
The eye completes incomplete shapes, which is why a partially visible item signals that there is more.
UI foundation · Gestalt principles
How much information occupies a given area, which should follow the user's expertise and task rather than a house style.
UI foundation · Visual design
One layout that reflows across sizes, ideally driven by content limits rather than by device categories.
UI foundation · Layout
Distinct layouts for distinct contexts, justified when the task genuinely differs rather than merely the screen size.
UI foundation · Layout
The structure that tells people what exists and where they are, which is an information architecture problem before it is a layout one.
Pattern · Structure
Free-form entry, where the label, the hint and the error placement do most of the work.
Component · Forms
Choosing one option from a known set, which is the wrong control below about five options.
Component · Forms
One choice from a small visible set, where seeing all the options is the point.
Component · Forms
Blocks everything else, which is why it should be reserved for things that genuinely cannot wait.
Component · Overlays
A panel that slides in from an edge, keeping context visible while offering more room than a popover.
Component · Overlays
Collapsible sections that shorten a page, at the cost of hiding content from scanning and from search.
Component · Navigation
Rotating content in one space, which performs poorly for anything the user needs to see.
Component · Containers
The conventions phones have settled on, what each one is actually for, and where they break.
Pattern · Structure
Front-load the specific thing that happened, because most notifications are read as a truncated line on a lock screen.
UX writing · UX writing
Ask at the moment the permission is needed, say what it enables, and make declining survivable.
UX writing · UX writing
Interactive targets need to be large enough and spaced enough to hit reliably.
Accessibility · Operable
Speed is a usability property, and the metrics that matter are the ones measured on real devices.
UI foundation · Performance
Hiding columns on small screens made the table tidy and removed the data field staff had opened it to see.
Case study · Data products
Touch targets, reach, input, performance and the assumptions that only fail on a phone.
Checklist · Mobile