Supermarkets don't openly advertise the presence of yellow stickers; instead, they're tactically deployed onto food products ...

Despite UK supermarkets all using their own clearly defined colours and branding, most they share the colour yellow for their ...

An expert has explained how yellow stickers 'make use of human psychology' and how customers are likely to react ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...