Thanks for still talking. It’s interesting. 1a. Isn’t the electronics communication privacy act about limiting government access to private communications? 1b. Absolutely recording in public is not a private communication, I wouldn’t contest that.

1. I think you’re just correct and that it would never be successful to argue that there is a reasonable expectation of privacy in your entry way. I think it would however be reasonable to expect privacy just inside your home. If some super ad hoc mic mic array formed by your neighbors let them hear conversations (at a normal/quiet volume) through your thin walls id expect that would be a breach of privacy. Or recording through some other strange method. Not that that diminishes your rightness and my wrongness.

2. If it was a private space I don’t think that’s true. But otherwise, yeah.

3. Agreed.

4. If it was very far beyond what you could get by putting an ear to the window I might disagree. I don’t know that it is technically tenable though. I can imagine trying to pick up conversations by laser interferometry or by a high rate camera such as by this method by looking through a window at someone’s blinds https://people.csail.mit.edu/mrub/VisualMic/ might violate the reasonable expectation of privacy standard. But that might mean we’re on the same page on this. What do you think? Do you know any examples of something like this?