The Focals eyeglass display, with snooping microphone, has been eliminated. Google eliminated it by buying the manufacturer and shutting it down. It also shut down the server these devices depend on, which caused the ones already sold to cease to function.

It may be a good thing to wipe out this product — for "smart", read "snoop" — but Google didn't do that for the sake of privacy. Rather, it was eliminating competition for its own snooping product.