We could also leverage trusted third parties for this purpose, for example, banks or DMV or Walmart. However, there needs to be a fiduciary interest by the thi

We could also leverage trusted third parties for this purpose, for example, banks or DMV or Walmart. However, there needs to be a fiduciary interest by the third-party (eg liability for identity theft, etc) in order to incentivize them to avoid fraud. It is not clear that there would be enough profit involved to offset the liability.