The whole premise of Amazon stores is to just grab stuff off the shelf and leave. If someone feeds $1 into the machine and gets a loaded card, can they just wa

The whole premise of Amazon stores is to just grab stuff off the shelf and leave. If someone feeds $1 into the machine and gets a loaded card, can they just walk out with $20 worth of merch? With a credit card you just get charged for whatever you took and you pay later.