Indian print shops run on WhatsApp and pendrives. A customer walks in, sends a PDF to the shopkeeper's WhatsApp, the shopkeeper downloads it, opens it, prints it. Multiply by 50 customers a day and the counter becomes a file-management job.
I built QR Se Print (https://qrseprint.in) to kill that workflow. The pipeline:
- Each shop gets a unique QR code (printed, stuck on the counter).
- Customer scans it with their phone browser — no app install needed on the customer side.
- Customer uploads the document and pays the shop directly (the shop owner connects their own Razorpay or Cashfree gateway; the platform takes zero commission).
- A lightweight agent on the shop's Windows PC picks up the job and prints it on any installed printer.
- The file deletes from the PC and the server the very next second after printing finishes.
Design decisions worth noting:
- No customer app. The phone side is pure web — scan, upload, pay, done. Adoption friction is zero.
- Deletion is not a cron job; it is a command that runs the next second after the print completes. Privacy is a feature, not a policy page.
- No hardware lock-in. If the shop already owns a printer, that printer works.
The product is live at https://qrseprint.in with a free demo, and I just submitted the companion Android app (free, ad-supported on the free plan) for Google Play review. Built solo from Dhanbad, Jharkhand, India. Happy to answer technical questions in the comments.
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