The document describes a conceptual design for a habit-building app called "I has a karot". The app aims to help users eat a carrot each time they receive a phone call by customizing their caller ID photo to remind them. It also provides storage for carrots in a backpack. According to initial user testing, the designer found they enjoyed snacking on carrots throughout the day but may forget during long calls or receive too many calls at once for the habit. The design could be expanded to other activities or automated further.

1. I has a karot A conceptual design by Victor Gane Stanford University, Spring 2010 CS377v - Creating Health Habits habits.stanford.edu Design Challenge To . . . eat a peeled carrot each time I receive a phone call. Time limit: 3 days

4. I has a karot storyboard Stanford University, Spring 2010 CS377v - Creating Health Habits habits.stanford.edu Instead of the photo of the person calling I see the trigger reminding me to eat a carrot During the call or shortly after I reach for my backpack and grab a carrot I change the picture caller id to act as a trigger to eat a carrot when I receive any phone call Every morning before leaving to school I put a bag of peeled carrots in my backpack I receive the first phone call and check who is calling I feel less desire to eat large meals after snacking on carrots 4-6 times a day