Passwords or Biometrics or location and token (phone) based authn choices are isomorphic to the authz problem of defining group membership where the group is "household". Sure a sharable/copyable password is an impediment identifying specific group members, but a combo of identifying the device and the user showing they are a member of the group (password sharing does this) is in principle enough. But the real problem is this fizzy "household". Surely I don't stop being a member of my household while travelling? Does a visitor to my house using my TV join my household? What if the visitor is an AirBNB guest? And what happens when my duaghter moves out of home? The tracking of personal relationship and ... needed is ridiculous/deeply intrusive. The "household" concept is unworkable.

One could consider patenting the process of flooding the patent office with machine generated patents, and useot to block others doing so. One would need to establish non-obvious, inventive step etc and it would need to not be based on prior art published on slashdot...

Really? Last time I looked at it seriously it was some of the most insane over-regulation and you ended up as a "carrier" (check the license fees for that) as soon as you started installing any sort of infrastructure (including trying to build a mesh) and there was so much as a single cent (profitable or not) changing hands.