FUMBLE / blind assisted

All the blind people have this situation, they can’t see the differences of tastes of drinks while they need something to drink, unless the normal people willing to help them. In the circumstances, the FUMBLE can help the blind to read the tastes on their own. Printing the tastes by the Braille on the bottle cap can not only increase the friction, but also help the blind to ‘see’ the taste of drink.