Scan any waiting room, and you’ll probably get a good survey of the tops of people’s heads, with row after row of folks hunched over their smartphones. But heads up: That common sight may change as tech companies bet that users are so attached to their screens, they’ll start to wear them.

It’s more than sci-fi speculation. The first testers of Google’s Glass device — which puts Google Search, Maps and other services on a screen mounted in front of your eye — are sporting the devices on sidewalks across the country.

Read the rest of this story Sunday in the Arizona Daily Star.