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WaterCoaster: A Device to Encourage People in a Playful Fashion to Reach Their Daily Water Intake Level

In this paper, we present WaterCoaster, a mobile device and a mobile application to motivate people to drink beverages more often and more regularly. The WaterCoaster measures the amount drunk and reminds the user to consume more, if necessary. The app is designed as a game in which the user needs to take care of a virtual character living in a fish tank, dropping the water level if the user does not consume beverages in a healthy way. We report results of a pilot study (N=17) running three weeks suggesting that our approach is appreciated and subjectively influences participants. Based on the results, we look forward to evaluating the system in a long-term study in the next iteration.