Germ Destroyer - A Gamified System to Increase the Hand Washing Duration in Shared Bathrooms
summary
Germ Destroyer is a tap-mounted sensing unit plus a phone game that measures hand presence and water flow and rewards users for staying at the CDC-recommended 15–20 seconds. Hardware uses Adafruit feather microcontroller with infrared and capacitive sensors and 3D-printed parts; firmware, app code and models are on GitHub. A 10-day field test logs 363 hand-washing sessions, raising mean duration from 5.56s to 9.30s and sessions ≥20s from 3.73% to 26.73%, and lowers door-handle colony counts.
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chapters (9)
- 0:00Introduction to Germ Destroyer
- 1:31System design and components
- 3:44Study objectives and methods
- 4:26Lab study procedure and results
- 5:52In-the-wild study setup
- 6:37In-the-wild results and findings
- 8:23Limitations and future work
- 9:07Summary and conclusion
- 9:28Q&A session
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