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. 2024 Jun 14;11:e50086. doi: 10.2196/50086

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©Roberto Espinoza Chamorro, Luciano H O Santos, Yukiko Mori, Chang Liu, Goshiro Yamamoto, Tomohiro Kuroda. Originally published in JMIR Human Factors (https://humanfactors.jmir.org), 14.06.2024.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Human Factors, is properly cited. The complete bibliographic information, a link to the original publication on https://humanfactors.jmir.org, as well as this copyright and license information must be included.

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Screenshots of the main sections (Japanese version) of the prototype: (A) Home tab with the "Login Reward" as a pop-up; (B) Home tab screen; (C) Activity tab screen; and (D) Profile tab screen.