It was designed such that a store nearby in a user's area would be marked using Google Maps API with available items and as soon as the user would place the order, the grocer would pack it and the user would be allotted a time limit to pick it up. Payments could either be prepaid or UPI only.
I had issues in figuring out linking web pages and also deployment of the Web-App on AWS. The team had issues with implementing the Barcode scanner API for PhonePe.
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