Tesco is to install facial recognition screens in its stores which will be able to target you with tailored adverts. The technology will try to work out your age and gender in order to suggest products that you might like to buy. Some have suggested that this idea has come straight out of the film Minority Report, where stores immediately recognise the main character and offer him a selection of clothes based on what he has bought before.

What technology seen in films or in novels would you like to use in real life? Would you like a hoverboard as used in Back To The Future? Would you kill for a James Bond gadget as devised by Q? Perhaps the technology envisaged in fiction terrifies you, and you would rather not have Black Mirror-style gadgets at all. Tell us what you would like to see made real, and what you think would be terrible if made into reality.