Can Google Glass be addictive?
15 October 2014 Last updated at 13:28 BST
Scientists say they have treated a man for internet addiction disorder, allegedly brought on by overuse of Google Glass.
The man had apparently been wearing the technology for around 18 hours a day - removing it only to sleep and wash.
Details of the case have just been published in the journal Addictive Behaviours.
The BBC's Rory Cellan-Jones has tried out Google Glass, and gave his reaction to the case.