Principle 2 Operable · Guideline 2.1: Keyboard Accessible
2.1.4 Character Key Shortcuts
Single-character shortcuts must be switchable or remappable.
What this means in practice
Speech input users otherwise trigger commands by accident. Mostly affects web applications that bind, say, “s” to save. Fix: allow turning them off or require a modifier key.
Normative wording
The binding text lives at the W3C. What you read here is our own faithful rendering – not a quotation.