Kenneth Cole has become one of the first brands to offer a Google Glass app with 21 Days, 21 Deeds.
The app, as you might guess, challenges users to do that many good deeds in a three-week period, using Glass to take photos as proof. Users are encouraged to use the hashtag #manupformankind and post the photos to Twitter. As Creativity Online points out though, you can just take the photos with your smartphone (or even -- gasp -- a camera) and post them on Twitter.
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Though few brands have yet offered Google Glass apps, if the technology catches on, we may see a repeat of 2009, when brands were falling over each other to release iPhone apps.