Jenna is a 25-year-old journalist from Long Beach, New York whose hobbies include playing softball, hiking, and staying active. She has a medical condition that requires her to find restrooms unpredictably. The presentation discusses developing an app to help people like Jenna easily locate nearby restrooms, as finding facilities can be difficult in unfamiliar cities. The app aims to address the problems of restroom accessibility and help meet an unpredictable biological need.