The Application U-WIN for Health Care Workers (HCW) to perform following tasks: 1) Beneficiary Registration: Under Universal Immunization Programe (UIP) of Government of India, the identified eligible Beneficiary can be registered on the Application. 2) Beneficiary Verification: The beneficiary’s relevant details can be captured in encrypted form which can be utilized to ensure that the vaccine is administered to the identified eligible Beneficiary. This is applicable at the time of registration as well as vaccination. 4) Vaccination Details: Based on the vaccine schedule, the vaccination details of the Beneficiary can be updated, and can view or download the past and upcoming vaccination chart or certificate. 5) Aadhaar Authentication: To ensure de-duplication, Beneficiary's Aadhaar authentication can be done from the application in the form of OTP and Demographic Authentication. This is applicable at the time of registration or at the time of validation. 6) Generation of ABHA - Those beneficiaries who are providing Aadhaar Number as proof of Photo ID card, can generate ABHA ID (Ayushman Bharat Health Account ID) to get benefits under ABDM. 7) User Logins: Using this application 3 type of users can login- Vaccinator (ANM), ASHA and Delivery Point Manager (DPM). Vaccinator can login to start and conduct the sessions allocated to them for respective site. The ASHA users can login to this application to view the due list of beneficiaries whose vaccinations are due and can also do pre-registration of the beneficiaries in the respective area to whom ASHA is linked with. The DPM can login to the application to add the delivery outcome details for the respective Vaccination Sites.