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. 2016 Jul 4;6:9. doi: 10.1186/s13612-016-0046-2

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 7 — “Mood Tracker” interface screenshots of the mood unlocking screen. To unlock their phone, users swipe in the direction of the their mood. Three types of icons were available. Participant could choose their favorite icon set (female, male, robot)