Google has issued advice for people testing its Google Glass smart glasses

The company announced the device in 2012. The glasses respond to touch or commands from a user's voice, displaying information on the lens. They are also equipped with a camera for stills and video recording.

The guidelines are targeted at Google's 'Explorers' - the small group of people in the USA who are testing the $1500 device ahead of an expected wider worldwide launch later in 2014.

Google says the list would help answer "new questions" arising from people wearing Google Glass in public.

'Ask for permission'

Standing alone in the corner of a room staring at people while recording them through Glass is not going to win you any friends. The Glass camera function is no different from a cell phone so behave as you would with your phone and ask permission before taking photos or videos of others.

Read: Google Glass review: 'This has changed my life'

'Don't Glass-out'

Glass was built for short bursts of information and interactions that allow you to quickly get back to doing the other things you love. If you find yourself staring off into the prism for long periods of time you’re probably looking pretty weird to the people around you.

"Don’t read War and Peace on Glass", Google advises users.

"Things like that are better done on bigger screens"

A software developer wearing Google Glass at a developers conference. The device can run apps like a smartphone. Credit: Press Association

'Don't be creepy and rude'

Respect others and if they have questions about Glass don’t get snappy. Be polite and explain what Glass does and remember, a quick demo can go a long way. In places where cell phone cameras aren’t allowed, the same rules will apply to Glass. If you’re asked to turn your phone off, turn Glass off as well.

Read: NYPD testing 'usefulness' of Google Glass

'Don't rock Glass while doing high-impact sports'

Glass is a piece of technology, so use common sense. Water skiing, bull riding or cage fighting with Glass are probably not good ideas.

The case against Cecilia Abadie was dismissed after she was stopped for driving while wearing the device Credit: Reuters/Mike Blake

In January, technology entrepreneur Cecilia Abadie was stopped by police in San Diego and given a ticket for wearing Google Glass while driving.

A traffic court dismissed the citation against the 44-year-old on the grounds of a lack of proof that it couldn't be proved that device was turned on while she was driving.

Read: Case against Google Glass driver dismissed