It's possible the state laws in question (Tennessee) only apply to audio recordings, which would suit my desire. I also don't believe that the idea of a rolling buffer that normally discards its contents to be morally against the idea of notification of recording, or of seeking someone's consent.

I'd be fine with glasses that only record audio in such a way, that illuminate an LED once the "record" button has been pressed. If audio is being recorded into a buffer at all times, but then discarded unless triggered to start "recording", then maybe that should not count as "recording" under the law.

As a practical matter, if one is in a situation where such recording is warranted, by the time you press the record button, you've already missed important information that's relevant to the context of the recording. Allowing a 60-second rolling buffer that then gets dumped to storage when "actual" recording starts should be allowed.