Whose going to enforce?
Bank or SIM provider? Never managed to activate facial recognition with Krungsri. They didn't know what to do. BB recognition works intermittently.
Who is going to trawl through SIM Nos and Account Nos to find a lack of matches. In fact they are looking for a needle in a haystack. Only way they can enforce this is to apply it on initial account application including mobile app set up which is quite enough to stop mule accounts.
Just like the retrospective tightening up of tax on incoming transfers this is yet another example of floating an idea to see if it will fly!