CBDCs
It's notable that South Korea is going down the route of internally restricted tokens right out of the gate. Depending on how much you trust a government implementing their use, CBDCs with per-token restrictions and/or expiry dates (though I couldn't find whether this CBDC features the latter at this stage) are either a fine tool to make welfare payments all the more efficient at serving the people or a highly effective tool for precisely controlling dissent; though these aren't necessarily mutually exclusive.