In an episode of the British series Black Mirror, a young woman sees her life change because of her bad score on social networks. In this fictitious world, each interaction - at work, with family, in shops, online or IRL (In real life, in real life in French) - gives rise to a note. The higher the rating, the more access to premium services. Conversely, a low note makes familiarity with precariousness and marginalization . This social credit system might be less frightening if China hadn't already imagined it, although it is a little different.