The Google Glass SDK allows to create personalized information with the goal to be perceived on Google Glass. The Google Mirror API is associated with this SDK that contains user interface, patterns, style, and glassware flow designer as the main resources available on the site. Google recommends 4 principles when designing for Glass: don't get in the way (of user experience), keep it relevant, avoid the unexpected, and build for people.
Tap Systems, the manufacturer of a wearable keyboard, mouse and game controller dubbed the Tap Strap, has unveiled SDKs that allows developers to create new kinds of applications. The Tap device uses sensors to detect the gestures users make and identify what they represent.
All Twitter APIs will soon use HTTP error code 400 for calls beyond your rate limit. One of Twitter's most popular services, the Search API, currently uses error code 503. You'll want to update any of your applications that use Twitter search so that they're looking for the right code.