Google suggests Glass wearers be polite and offer demonstrations to possibly win over the wary. Glass fans were advised to follow the same rules set down for smartphone use in businesses.
"If you're asked to turn your phone off, turn Glass off as well," Google said. "Breaking the rules or being rude will not get businesses excited about Glass, and will ruin it for other Explorers."
Google early this year unveiled a partnership with U.S. vision insurer VSP to make prescription Glass and to reimburse some of the costs under health benefits.
That does not include the $1,500 price for Glass.
Glass connects to the Internet using Wi-Fi hot spots or, more typically, by being wirelessly tethered to mobile phones. Pictures or video are may be shared through the Google Plus social network.
Copyright Agence France-Presse, 2014