Comment by throwaway219450

IANAL. In states with multi or all-party consent, there is usually some wording like "reasonable expectation" of privacy, which you don't have in public by default. The store could argue you have no expectation of privacy there, so they can record audio. There might be other legal codes, but I think this is how smart doorbell manufacturers are allowed to operate in those states.

> (c) For the purposes of this section, “confidential communication” means any communication carried on in circumstances as may reasonably indicate that any party to the communication desires it to be confined to the parties thereto, but excludes a communication made in a public gathering or in any legislative, judicial, executive, or administrative proceeding open to the public, or in any other circumstance in which the parties to the communication may reasonably expect that the communication may be overheard or recorded.

Penal Code § 632(c)