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Detecting Abnormal Keyed-Entry Rates from POS Entry Mode Data

Every card authorization carries a small field that records how the card data reached the terminal: chip, contactless, magnetic stripe, fallback swipe, or typed in by hand.

  • Normalized entry mode data separates keyed sales from other transactions
  • Filter out keyed sales from mail and phone orders to isolate point-of-sale transactions
  • Use Wilson score interval to statistically determine significant deviations from baseline

I saw my local shopkeeper writing things

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built So one evening i was just sitting at my local grocery store, gossiping with bhaiya like i usually…

  • Shopkeeper uses paper diary for sales recording.
  • Reporter inspired by shopkeeper's method to create ShopKaro app.
  • ShopKaro offers affordable digital solution for Indian kirana shops.

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