Buyers of Google Glass have been warned they cannot sell their pricey new techno-spectacles on eBay or anywhere else.

In terms of sale posted on its website, the advertising giant said a Google Glass was for life, unless you wanted to give it away for nothing. Anyone who failed to follow the rules will have their devices remotely shut down.

The first Google Glass Explorer editions are rolling off the production lines and into the hands of early adopters who each paid $1,500 for an early version of the headgear. The hardware projects information into the wearer's field of view.

Google stated: "You may not commercially resell any device, but you may give the device as a gift. Recipients of gifts may need to open and maintain a Google Wallet account in order to receive support from Google. These terms will also apply to any gift recipient."