Consider the following statements about the new keyboard. 1. It adjusts the onscreen keys based on the user’s finger size and spacing. 2. Duran believes that educators, students and researchers will benefit from his invention. 3. It has been tested by Duran, blind-folded, but not by real blind people. 4. When Duran tested his own invention for the first time he said was an indescribable feeling. 5. It costs much less than other modern Braille typing solutions. Which of the statements above are true, according to the text?