Black Mirror: 6 Best & 6 Worst Inventions

Fifteen Million Merits features one of the most horrifying ideas out there, and yet it's one that is closest to becoming a reality: eye-tracking adverts.

For decades, as soon as ads came on, we'd all head to the kitchen and put the kettle on, and the advertisers knew we were doing that, but they also knew that we didn't want to miss what we were watching. Those of us who lived alone would be back and forth in the kitchen doorway, watching the ads anyway. Those who didn't always left someone watching the adverts, ready to call out the iconic "It's on!" or, in more recent years, pause the programme when it came back. Advertisers didn't care that we weren't all watching so long as someone was, as that was part of the contract between us.

Fifteen Million Merits sees that contract broken. All content is ad-supported, skipping ads costs real money, and eye-tracking means you are forced to watch every single second of the woman you've idolised in her new porn career.

And all without a cup of coffee to wash it down.