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 went on to acquire an excellent education and to become an important influence on the treatment of the blind and deaf. Born physically normal in Tuscumbia, Alabama, Helen Keller lost her sight and hearing at the age of nineteen months to an illness now believed to have been scarlet fever.