Cowin has developed a new API called ‘Know Your Customer’s/Client’s Vaccination Status’, or KYC-VS. With this new API, people will be able to whether a person has been vaccinated against coronavirus or not, the Union Health Ministry said on Friday. In order to check the status, the individual needs to enter his/her mobile number and name, followed by an OTP. Cowin will then send a response between 0-2, where 2 represents full vaccination, to the verifying entity.