Choose typefaces with open forms and sturdy strokes, then allow dynamic sizing without truncating meaning. Avoid walls of text; prefer short lines and clear hierarchy. Let components reflow gracefully when the wrist rotates, sleeves interfere, or accessibility settings increase scale dramatically.
Not everyone can look at tiny pixels. Provide spoken hints, rich haptic patterns, and subtle tones that convey status, urgency, and direction. Ensure redundant cues support each other, and give users control over intensity, verbosity, and quiet hours to respect context and comfort.
Straps, tattoos, gloves, and mobility differ. Offer left-hand modes, customizable buttons, and adjustable gesture sensitivity. Consider cultural norms for haptics and sounds. Validate reach, grip, and readability with older adults, athletes, and people with limited dexterity to ensure fairness and dignity.