This might be an unpopular opinion, but any social program must be able to accept some level of "shrinkage" in the form of fraud. Just as retail businesses gene

This might be an unpopular opinion, but any social program must be able to accept some level of "shrinkage" in the form of fraud. Just as retail businesses generally accept some level of loss to theft, return fraud, and shipping damage. Trying to create an "ungameable" system will either create a bloated bureaucracy that no one will want to use or will require a surveillance panopticon. That's not to say that fraud should no be investigated and prosecuted. Just that it's important to accept that you will never get fraud to zero and there will always be that one guy who's collecting benefits for a bunch of made-up identities.