PaymentsSource: How Sainsbury's put cashierless checkout tech in one of its busiest...

Counter to the trend — pioneered by Amazon — of launching cashierless technology in small stores to keep traffic under control, the U.K. supermarket chain Sainsbury’s has launched a trial of cashierless mobile shopping in one of its busy London stores, Clapham North Station Local.

Choosing a busy urban supermarket to test mobile scanning and payments reflects the fact that big city stores typically experience long lines of shoppers wanting to pay for their groceries at the end of the working day or in their lunchtimes. If the pilot proves successful, Sainsbury’s will roll out the payments technology to its stores throughout the U.K.