[At the question, Yuya digs into his pants pocket to pull out a rectangular device that he attaches to his arm. He retrieves his deck as well, places it in the device, and it turns on to project a holographic board.]

This! It's what's used back home to create holograms of our Duel Monsters cards. [He sets Whip Viper, and the snake appears on the floor with a squawk.]

In ViViD, they become tangible like they would in an Action Duel arena, so they could help you protect yourself.