Tesco in the UK have Scan-as-you-Shop, which sounds similar to your Scan-and-Go, the prime difference would be that you are given a dedicated device for doing t

Tesco in the UK have Scan-as-you-Shop, which sounds similar to your Scan-and-Go, the prime difference would be that you are given a dedicated device for doing the scanning rather than requiring you phone. I've used this regularly for the past few months and had no real issues with it.