Dragging Movements
All functionality that uses a dragging movement for operation can be achieved by a single pointer without dragging, unless dragging is essential or the functionality is determined by the user agent and not modified by the author.
In plain language
Anything that's normally done by dragging (like moving a slider or reordering a list) must also be doable with simple clicks or taps, without needing to drag.
Why it matters
People with motor disabilities or hand tremors often can't perform a precise, sustained drag. If dragging is the only way to use a feature, they're completely excluded from it.
In practice
Fails this criterion
A map on the site can only be panned by dragging it with the mouse — there are no arrow buttons or other alternative controls.
Meets this criterion
The same map can still be dragged, but also has visible arrow buttons that pan the view with simple clicks.
Test it yourself
Find anything on the site that involves dragging (sliders, reordering, map panning) and try to achieve the same result using single clicks or taps instead. If dragging is the only way, this criterion is failing.