A small brightly coloured plastic, rectangular keyring with six braille cells on a single line, which are made up of push pins. You press out the pins using the stylus provided to create letters of the braille alphabet.
In the past the blind used to utilize only the simplest solutions. Those were not bad. Mobility canes are still very effective when it comes to acquiring spatial orientation or avoiding obstacles on the ground - the ones that are in the path of the visually impaired. However, new, more advanced, electronic devices were invented lately. And they occurred to be a perfect complement to the canes.