Firstly: batman.wikia.com, summing up the Batman universe: "The Box is a mind-reading machine created by Edward Nygma that fronted as 3D Television equipment, able to transmit brainwaves through a T.V. to create 3-D images. It was used by The Riddler and Two-Face to gain the knowledge of others. The device was built by and funded Nygma's company NygmaTech."
all above screenshots from Batman Forever, 1995
Design by Melnikov K., 1929