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.
Helen Keller was an author, lecturer, and crusader for the handicapped. Born physically normal in Tuscumbia, Alabama, Keller lost her sight and hearing at the age of nineteen months to an illness now believed to have been scarlet fever.