The shopping lists we used to scribble on the back of an envelope are increasingly already known by the supermarkets we frequent.

Firstly via the loyalty cards we scan at checkouts, and more and more so from our online baskets, our shopping habits are no longer a secret.

But now more retailers are using AI (artificial intelligence) - software systems that can learn for themselves - to try to automatically predict and encourage our very specific preferences and purchases like never before.

Read more on BBC Business News here.