Sai Kaustav Dasgupta (Oct 6th,1991) from Puttparthi, Anantapur, Andhra Pradesh, despite suffering from Osteogenesis Imperfecta which has left his body 90 percent disabled, have made a record in the typing field to type fastest at the speed of 28 words in 52 seconds using mouse with left index finger alone on March 10th ,2018 at Puttparthi.