Google specifies that the invitations in which they are giving out for Google Glass are strictly limited to people who are U.S residents that are at least 18 years of age.  The individuals invited must also be able to pick up Glass in Los Angeles, New York or San Francisco.

Ryan Mott, participant in the Glass Explorer program posted a screenshot of the email in which he receive to his Google+ profile. The email consisted of a subject line – “Invite a friends to explore the Glass,” and the email when on to explain how they love demoing the Glass to their friends and associates.  The email explained that he could invite a friend of his choice to the demo and sure did make the event sound like one that many people would feel privileged to attend.