Adolescents with type 1 diabetes are vulnerable to suboptimal glycemic control, generally due to insufficient self-care behaviors (1,2). Because they have some of the highest rates of mobile communication technology use (3), this modality may hold promise for providing reminders or encouragement to adolescents to engage in self-care. However, the effects of text messaging interventions on self-care and glycemic outcomes are mixed, with some reports favoring improvements in teen self-care behaviors such blood glucose monitoring frequency or medication adherence (4–7).

In an alternative attempt to reach this high-risk age-group, researchers have explored the use of financial incentives to promote self-care behaviors, which yielded some glycemic benefit in the short term (8,9). However, there is limited research on the combination of a financial incentive and a mobile health intervention (10,11) and the potential...

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