Abstract: A processor implemented method for secure delivery of a product or service is provided. The method includes (i) generating a first database by obtaining information regarding location as selected by a first user, (ii) authenticating a second user at a second user device by verifying user identity and bank details, to generate time restricted offers from the second device, (iii) verifying an assistant at a third device, (iv) communicating the time restricted offers to the first device based on the preference of the first user, (v) obtaining a product or a service request from the first device of the first user, (vi) obtaining payment from the first user at the first device for the selected product or service and transferring the payment to an intermediary payment bank and (vii) generating a unique image code when a secure payment is received from the first user for the selected product or service.