 This pilot will look at the utility of a new innovation to promote gluten free diet adherence - a portable gluten sensor device. Participants will be 30 teenagers and adults with celiac disease recruited from the Celiac Disease Center at Columbia University in New York City. Before and after the intervention, participants will be asked about their adherence to a gluten free diet, quality of life, symptoms, and feelings of anxiety, and depression. This pilot data will help to inform interventions that the investigators hope to test in a larger NIH-funded trial to better understand the best ways to promote adherence and quality of life in celiac patients. 