For recording in cells, the glasses would be caught by the regular scanners used at various security boundaries including upon entry to custody, at least every time I've been detained. Is that not normal in the US?
I mean, critical support to Meta I guess. They finally figured out a real use case for their glasses. Albeit a very limited one because there's already hidden cameras people can wear on their body, all of which are easily detectable when they search you before chucking you into a cell.