SP&F is a mobile service that aims to develop the habit of daily sunscreen use. It sends notifications on sunny mornings with the forecast and a reminder to place one's phone by their sunscreen bottle. This conditions users to apply sunscreen when they retrieve their phone before leaving. It also aims to be non-disruptive by only notifying on sunny days and using light reminders. The design was tested with mock notifications and user feedback was positive while also providing ideas to improve the experience and effectiveness of the system.

1. SP&F: Sun Protection & Forecast A conceptual design by Loreanne Garcia & Shuqiao Song Stanford University, Spring 2010 CS377v - Creating Health Habits habits.stanford.edu Design Challenge Use mobile technology to develop the habit of wearing sunscreen daily. Time investment: 5.5 hours [Some brief edits in red ]

4. Karla’s SP&F Experience Stanford University, Spring 2010 CS377v - Creating Health Habits habits.stanford.edu Karla wakes up early to her cell phone alarm. After that, she checks her phone. She’s excited that there’s a message from SP&F because that means it is going to be a sunny day! She follows the reminder to place her phone with the reminder next to her sunscreen bottle before going to the restroom. She goes through her regular morning routine which includes a yummy breakfast and a nice hot shower. She is happy because her skin is protected and now she is ready for the sunny day! She heads out the door for her morning class. As she’s getting ready to go, she remembers that she needs her phone. Seeing her phone next to the sunscreen, she remembers the SP&F reminder and puts on some of the sunscreen quickly. A beauty-conscious friend tells Karla about a spiffy new service she is using called SP&F (Sun Protection & Forecast) that helps to remind her to put sunscreen on when it’s hot and sunny out. Karla signs up too…she cares about her skin! Later that night, she gets a message from SP&F explaining how the service works. The message suggests that she puts her lotion somewhere visible. Karla digs it out of the bathroom drawer and sets it on her table; then she goes to bed.

5. Prototype of SP&F Notification Stanford University, Spring 2010 CS377v - Creating Health Habits habits.stanford.edu Place your phone near your sunscreen so you don’t forget to put it on before you go out! Receive text with survey link every other evening to measure habit. Receive service explanation email on the evening of April 19th. On the morning of sunny days April 20-29th, receive SP&F notification (see right). 1 2 3

12. SP&F Service Summary Stanford University, Spring 2010 CS377v - Creating Health Habits habits.stanford.edu From the S un P rotection & F orecast notification  to your mobile phone  to your sunscreen bottle  to wearing your sunscreen 