I'd agree that they're both woefully lacking, but there's nothing fundamental preventing them from being successful, it just hasn't been done yet because our ex

I'd agree that they're both woefully lacking, but there's nothing fundamental preventing them from being successful, it just hasn't been done yet because our existing institutions are not yet degraded to the point where that juice is worth the squeeze. Biometrics, on the other hand, are flawed for in a much more fundamental way.