Since it is a 12 digit number, there are chances of mistakes in day to day life. However, ISO has introduced the check digit, using which one can identify the correctness of the ISIN number. The check digit helps in identifying the errors in previous 11 bits.
Helen Adams Keller (June 27, 1880 â June 1, 1968) was an American author, political activist, and lecturer.
She received a B.A. cum laude in 1904 from Radcliffe College. She thus became the first deaf-blind person to graduate from college. In 1936 she moved to Connecticut where she lived until her death in 1968 at the age of 87. While at Radcliffe, Helen Keller began a writing career which was to continue for 50 years. In addition to The Story of My Life, she wrote 11 other books and numerous articles on blindness, deafness, social issues and womenâs rights. Many books and plays were written about her life.