AI in Cashierless Checkout Stores Quiz

Answers and explanations appear as you take the quiz.

1. In a cashierless store, what do shelf weight sensors mainly contribute?
   • Identifying shoppers by their faces
   • Detecting when an item is lifted from or returned to a shelf
   • Printing receipts at the exit
   • Setting prices for each product
2. Why are some shopping events sent to human reviewers?
   • The law requires a person to watch every transaction
   • Reviewers set the store's prices
   • Reviewers restock shelves remotely
   • The system's confidence about who took which item falls below a threshold, for example on a crowded shelf
3. What did Amazon do with Just Walk Out in most of its US Amazon Fresh grocery stores in 2024?
   • Replaced it with Dash Cart smart carts
   • Added facial recognition to it
   • Expanded it to cover more aisles
   • Converted the stores to cash-only payment
4. Which kind of store is generally the best fit for full camera-based checkout-free technology?
   • A large supermarket with lots of loose produce
   • A warehouse club selling bulk pallets
   • A small, busy shop with a limited product range, such as a stadium concession stand
   • A furniture showroom with made-to-order items
5. Why does combining weight data with vision work better than either one alone?
   • Weight sensors can recognize product packaging
   • Cameras cannot see shelves at all
   • Different products can weigh the same and cameras can be blocked, so each signal covers the other's gaps
   • Combining them removes the need for camera calibration
6. What role does the planogram play in identifying which item was taken?
   • It tells the system which product is supposed to sit on that shelf
   • It tracks shoppers' faces
   • It processes the payment
   • It sets the receipt format
7. How do most cashierless systems track shoppers inside the store?
   • By scanning ID cards at every shelf
   • Through GPS on shoppers' phones
   • Through RFID tags worn by shoppers
   • As anonymous figures followed by overhead cameras, generally without facial recognition
8. How can a family shopping together be handled?
   • Each person must enter with their own payment method
   • One payment account can cover several tracked people who entered together
   • Items passed between people are never charged
   • Groups must use a staffed register