Dragon Radar-proof box

The Dragon Radar-proof box was created by Shu to hold a Dragon Ball found by Emperor Pilaf during the Red Ribbon Army Saga.

History
After being bested by Goku and Bulma the last time around with their superior Dragon Radar, Pilaf decides to find a way to foil any further attempts of collecting the Dragon Balls by anyone but himself. The box is made of a material that completely blocks the small amount of energy Dragon Balls give off as a signal to their location. To find the Dragon Ball located within it, Goku, Krillin, Yamcha, Puar, and Upa have to go to Fortuneteller Baba to learn its whereabouts. The Dragon Radar-proof box is not seen again after Pilaf's plan surrounding the box fails.

Appearances in games
The proof box appears in Dragon Ball: Origins 2, and it is an item in Dragon Ball RPG: Shōnen-hen.