iPad®, iPhone® (3GS or later), and iPod touch® (3rd generation or later) support more than 50 Bluetooth wireless braille displays right out of the box. Simply pair one and start using it to navigate your iOS device with VoiceOver — no additional software needed. In addition, iPad®, iPhone®, and iPod touch® include braille tables for more than 25 languages.
Braillino (Requires serial numbers greater than 09307)
Easy Braille (Requires serial numbers greater than 09123)
Braille Sense (Requires firmware v4.0 and higher)