I live in Berlin, and this is standard here. There are 6 self checkout stations with a single exit. Once you are done scanning items and have paid, your receipt

I live in Berlin, and this is standard here. There are 6 self checkout stations with a single exit. Once you are done scanning items and have paid, your receipt has a barcode you have to scan to exit. It always takes longer to scan your items than get through the gate, so I’ve never had to wait.