In the Yu-Gi-Oh Movie : Dark Side of The Dimension. Kaiba introduce to all of Duelist a new Duel-Disk system, which have features to stored all of the card data that owner own to the
data-center of Kaiba Corp, So they didn't have to hold the card in their hand, the card just appears in their vision, probably using some like Augmented Reality thing, or we can say a Digital Card.
We know that the first generation of Yu-Gi-Oh series (Yugi Mutou) universe, still use a normal duel-disk. Even so in GX, we can clearly se Judai Yuki, the second generation of Yu-Gi-Oh still use the Normal duel disk. It contradicted with the timeline of Yu-Gi-Oh universe, because if Kaiba was introduce the new duel disk in Yugioh first generation, the new duel disk will be also appear in Yu-Gi-Oh GX, even 5D, and Zexal. It's just appear in Yu-Gi-Oh Arc V and Vrains.
Could someone explain that to me ?