PocketDot 8-cell Braille display that MagSafe onto back of iPhone

This morning while at Vista Center Ignite Pitch for blind accessibility innovation, I came across a really innovative and cool Braille display that is 8-cells, uses Braille HID, USB-C, and has 6-dot Perkins keys layed out in 2-colums and 3-rows (similar to BSI in screen away mode). I think it's cool because it MagSafe onto the back of iPhone and is about the same thickness, so fits into pocket easily and well. Price is suppose to be $250. It's a prototype now and they're looking for beta testers. I've signed up and you can to at: https://www.mypocketdot.com/