developing Core requirement
Pointer Pressure Not Relied On
Summary in Plain English
Requiring a particular pointer pressure - a force press, for instance - cannot be the only way to do something, unless that pressure is essential.
Why It Matters
Pressure-sensitive input assumes controlled force, which is not available to people with weakness, tremor, or those using a head pointer, stylus or switch.
Scope: When This Applies
The draft's own conditions, quoted from guidelines/groups/input-operation/pointer-input/pointer-pressure-not-relied-on.md.
Except when
- Specific pressure is essential to the functionality.
Examples from the Draft
Worked examples the W3C editors wrote into the provision itself, not examples invented here.
Specific pressure would be essential to a paintbrush feature or advanced signature verification.