"Cards" are created by developers who write software for Glass and are pushed to Glass via the apps they build and which users can "install." Cards can stay in place in the timeline, or can be "pinned" by the user so they remain accessible as time goes by.
In addiction to information, the cards can offer simple user interaction and can be shared between Glass users.
Users can capture pictures and video through the camera with voice commands or by tapping the touchpad. (
Users initiate voice commands by saying "OK, Glass," which "wakes up" the device and prompts it to accept voice input.
By saying "take a picture," "get directions to" or "make a call to" users can command Glass to function in these limited ways. Voice commands can also enable users to Start a Google+ hangout, use Google Now, search the Internet, translate language, get the weather and find out flight information.
If you make a call or send an email or text message, that communication happens not by Glass alone, but through a smartphone.
One user this week recorded an "unboxing" of Google Glass through Glass itself.
An 'unboxing' of Google Glass through Glass itself
As the unboxing reveals, Glass comes with clip-on sunglasses. In the future, Google may partner with Ray-Ban or Warby Parker to offer prescription eyeglasses with Google Glass electronics built in. Another possibility is a clip-on product that turns regular eyeglasses into Google Glass devices.
The terms of service
Google Mirror API Terms of Service were published this week. Google is banning for early users the resale, loan or transfer of a Glass device without Google's permission. Google reserves the right to remotely de-activate the devices and not give accused violators a refund.
Google is banning monetization by app developers: No charging for apps, no advertising.
Glassware apps don't run on the Glasses, but in the cloud.
No retail ship date or price has been announced, but prognosticators say it could go on sale by the end of this year at the earliest or the end of next year at the latest.
What these facts tell us
Overall, the facts we learned this week tell us that Google is taking a very conservative, controlling approach to the platform.
Instead of flooding the device with features and functions, it's limited to a few common, powerful features. Instead of releasing it to the public, Google is allowing only 10,000 initial users and banning them from selling or sharing the devices.