To find any errors in the transcription process, blind proofreaders will proofread braille pages, sometimes against audio versions of the same document, and note mistakes on either a Braillewriter (braille typewriter) or a braille notetaker (a portable electronic braille device). Our proofreaders share the same extensive and ongoing training as our transcribers, enabling them to proofread a variety of braille formats. Our proofreaders are ultimately responsible for the accuracy of our braille.