Building payment solutions for brick-and-mortar
summary
Case study of a POS built for Cafe Coffee Day with over 1,500 stores: a mobile app that issues QR codes with signature and timestamp for payment, supports a dual-balance model (beans loyalty points plus wallet), and enforces one QR per user and disabled screenshots. Offline flows use a printed QR on the bill, business processes route one‑star complaints to area managers, barista training uses WhatsApp and printed cards, and fraud patterns include rooted phones and device‑ID spoofing.
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chapters (12)
- 0:00Introduction Walks CCD
- 1:08Data collection challenge CCD
- 3:20Walks platform design CCD
- 5:11Key learnings building app
- 7:59App user experience payments
- 10:30Security QR code payments
- 12:46Fraud device restrictions
- 14:34Offline payments process gaps
- 16:43Barista training app adoption
- 18:11Customer complaint resolution
- 19:15Marketing barista incentives
- 20:23Q&A
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