Lack of knowledge on how to get registered on CoWin platform as well as lack of knowledge on enrolment procedure threatens to impact the world’s largest vaccination programme — inoculating eligible Indians with Covid vaccines. A survey released on Monday showed, 63% in rural areas didn’t know how to register on the CoWin app for vaccination.Lack of knowledge on how to get registered on CoWin platform as well as lack of knowledge on enrolment procedure threatens to impact the world’s largest vaccination programme — inoculating eligible Indians with Covid vaccines. A survey released on Monday showed, 63% in rural areas didn’t know how to register on the CoWin app for vaccination.