A masterpiece 450 years in the making.
In 1563, Giambattista della Porta published a manuscript titled "De Furtivis Literarum Notis." Within that manuscript, Porta described a means to reveal hidden messages on the side edge of playing cards. Based on research at the Conjuring Arts Research Center, the concept of hidden messages on playing cards was also used as a secret code during World War I.
EDGE by Mathieu Bich builds upon that history in a new, groundbreaking direction, allowing you to reveal selected cards, names, or predictions. Instantly resets - and it's almost entirely self working.
With Edge, you can cause writing to appear, disappear, or even change: visually.