The Social Credit System tracks where you go, what you do, what you say, what you buy and who your with as well as how much time you spend volunteering for non paid community service (etc) measuring what the state feels is respectable conduct and rates your behavior so the government can better shape you into a more responsible citizen using incentives like access to employment, housing and freedom of movement.

One of the activity codes increasing your social credit score is how many friends & family members you turn in for questionable mannerisms every month (they feel 10 is an average number).

The only part of your life it doesn’t measure, rank, mold and manage are your private thoughts but are sure to include that function once it’s technologically possible.