I really feel that Branded is the most practical answer for this effect yet

New from Juan Pablo Magic - BLUFFF

Compatible with iPhone and iPad

Acid-free art paper

and presentational tips will give you everything you need to dazzle and delight your audiences

Blindfold (Driving) T. Magician I really feel that BrandedThis blindfold is one of the finest on the market today. The blindfold can be inspected (tried on) by any member of the audience. They WILL NOT be able to see through the thick black cloth. Even if they turn it around or turn it inside out they just can't see through the blindfold. However once you have it back into your hands you (or a confederate's) can see right through the blindfold with ease. Very easy to perform!