You can have a discussion about how to implement voter ID without deciding whether it's a good idea overall, or whether it violates the VRA.
In fact, most voting machines don't check ID at all; they leave that to the humans. (If they did check ID, the machines could secretly match votes to names.)
>>nickod+(OP)
Whether or not they have it now is irrelevant (it's an example) - any proposed technology would inevitably see this requirement, and others, being identified based on opinion, not fact.