Refreshable Braille Display  
The Refreshable Braille Display approach uses raised pins to form braille as a series of dots. It is controlled by an electronic circuit and can be interfaced to computer displays or braille keyboards through the USB interface or even wirelessly through bluetooth.  This allows information to be stored electronically and thus greatly reduces the bulk, as compared to the traditional embossed paper format. Electronic information can also be easily edited and scanned through for searches. Each refreshable braille cell has a set of small pins that correspond to the dot pattern for a letter or word sign which are raised.  
 
This device is ideally used by people who are deafblind (A person who is both deaf and blind).