[jeroenhd]

You don't need a cashless society for any of that. Background checks and basic identification requirements can already impose oppressive regulation on everyone even if the products are paid for by cash.

Cash is just an IOU for the bank that can be devalued at any point in time. If you want to avoid government oppression, go back to bartering rare metals. "Yes but what if the government turns oppressive" isn't an avoidable scenario, cashless or not.