A weekly round up of the hottest international retail and consumer news. Retailer Walmart, which has been testing robots in a few stores in Arkansas and California, will expand the programme and have robots in 50 stores by the end of January. The robots patrol store aisles and scan for out-of-stock items and incorrect prices, as well as incorrect or missing labels. 2. The not-so-happy world of Haribo Amazon Key, a US$250 service, is being trialled in some parts of the US. Using a smart door lock, Amazon drivers will be able to leave parcels inside a consumer’s house instead of on the doorstep. The service is paired with the Amazon-built Cloud Cam security camera, which records deliveries, beaming either live or recorded video to a smartphone app. Visits have to be paired with specific orders. 4. Not much to smile about for Colgate-Palmolive

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