Vibweb is a prototype of a device for deafblind people, developed within a research project founded by PTS (The Swedish Post and Telecom Authority).

The purpose of Vibweb is to communicate information on a computer screen to the user. This is done by modulating vibrations as Morse Code.

Results from user tests show that even if the test subject lack knowledge about Morse Code, it is easy to identify the code when kept within a range of letters from one-puls letters to three-puls letters. Words can be identified by the word’s first three or four letters, making it unnecessary to identify words by decoding each letter of it.

Pulses of Morse Code can be made up by one-pulse vibrations, di/dot (.) or da/dash (-), two-pulse vibrations didi (..) or dada (–), up to five-pulse letters, and symbols. These pulses corresponds to letters e (.) and t (-), i (..) and m (–) in the latin alphabet. Di (.) are a short pulse while da (-) are a longer puls.

For more information about Morse Code see
https://en.wikipedia.org/wiki/Morse_code

Information of how to learn Morse Code
http://www.learnmorsecode.com/