System and method to enable blind people to detect and access hyperlinks
within Braille documents. A proximity sensing foil placed under a Braille
page senses the position of a reader's fingertips and provides
coordinates of the sensed position. A workstation computes the distance
between the sensed position and the predefined positions hyperlinks the
page is known to contain, which are initially stored in a hyperlink
table. When the user's fingertips are positioned over a hyperlink, the
computed distance is less than a threshold value, in which case an
acoustic signal alerts the user that a hyperlink is present. The user may
then access the hyperlink.