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. 2021 Feb 5;5(2):e20464. doi: 10.2196/20464

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©Casey Anne Cole, Shannon Powers, Rachel L Tomko, Brett Froeliger, Homayoun Valafar. Originally published in JMIR Formative Research (http://formative.jmir.org), 05.02.2021.

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 Formative Research, is properly cited. The complete bibliographic information, a link to the original publication on http://formative.jmir.org, as well as this copyright and license information must be included.

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Comparison of individual puff durations collected via the Clinical Research Support System (CReSS; blue) and Automated Smoking PerceptIon and REcording (ASPIRE; orange).