However, I am still trying to figure out how to prevent stealing and how the shopper will be able to scan fruits, veggies, etc. Any links that you could provide?
Problem with RFID is most items do not have RFID tags, and RFID tags cost money. Barcodes are already on (almost) everything and they're practically free.I'm not sure putting a scale in each cart is cost effective or accurate -- scales need to be level and motionless to be accurate. What I would do is have a cart scale that weighs the whole cart just before the customer leaves the store (subtracting, obviously, for the weight of the cart). It can compare the net cart weight with the cumulative weights of the items individually scanned previously. Fruits and veggies can be processed on a separate small scale with a touchscreen menu interface (to select the fruit/veggie type) before cart weigh-in.Or instead of barcodes/RFID, how about an IR sensor in front of each item on the shelf. When an item is detected as being removed from the shelf, the nearest iPad registers the item as purchase pending. (The shopper can return the item to the shelf to clear it back off their list -- needed for folks just reading labels.) Only trick then is deciding which customer picked up the item... hopefully your customers aren't packed in so tight an item removal is registered on the wrong iPad.
Maybe I have the mind of a thief, but your IR idea is easily circumvented. Imagine two bottles of wine next to each other on the shelf.
Quote from: Henry_Best on Sep 07, 2013, 04:46 amMaybe I have the mind of a thief, but your IR idea is easily circumvented. Imagine two bottles of wine next to each other on the shelf.Yeah this is a tough nut to crack. You'd need dividers between items, but even so they can take both bottles and put the cheap bottle back in the expensive slot.