== Abstract ==

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 We seek to quantify smartwatch use, and establish differences and similarities to smartphone use. Our analysis considers use traces from 307 users that include over 2.8 million notifications and 800,000 screen usage events, and we compare our findings to previous work that quantifies smartphone use. The results show that smartwatches are used more briefly and more frequently throughout the day, with half the sessions lasting less than 5 seconds. Interaction with notifications is similar across both types of devices, both in terms of response times and preferred application types. We also analyse the differences between our smartwatch dataset and a dataset aggregated from four previously conducted smartphone studies. The similarities and differences between smartwatch and smartphone use suggest effect on usage that go beyond differences in form factor.

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== Original document ==

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The different versions of the original document can be found in:

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* [http://jultika.oulu.fi/files/nbnfi-fe201801162071.pdf http://jultika.oulu.fi/files/nbnfi-fe201801162071.pdf]

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* [http://urn.fi/urn:nbn:fi-fe201801162071 http://urn.fi/urn:nbn:fi-fe201801162071]

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* [http://dl.acm.org/ft_gateway.cfm?id=3025817&ftid=1870306&dwn=1 http://dl.acm.org/ft_gateway.cfm?id=3025817&ftid=1870306&dwn=1],

: [http://dx.doi.org/10.1145/3025453.3025817 http://dx.doi.org/10.1145/3025453.3025817] under the license http://www.acm.org/publications/policies/copyright_policy#Background

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* [https://dblp.uni-trier.de/db/conf/chi/chi2017.html#VisuriSBGRKF17 https://dblp.uni-trier.de/db/conf/chi/chi2017.html#VisuriSBGRKF17],

: [https://people.eng.unimelb.edu.au/vkostakos/files/papers/chi17.pdf https://people.eng.unimelb.edu.au/vkostakos/files/papers/chi17.pdf],

: [http://jultika.oulu.fi/files/nbnfi-fe201801162071.pdf http://jultika.oulu.fi/files/nbnfi-fe201801162071.pdf],

: [https://dl.acm.org/citation.cfm?doid=3025453.3025817 https://dl.acm.org/citation.cfm?doid=3025453.3025817],

: [https://findanexpert.unimelb.edu.au/scholarlywork/1201954-quantifying-sources-and-types-of-smartwatch-usage-sessions https://findanexpert.unimelb.edu.au/scholarlywork/1201954-quantifying-sources-and-types-of-smartwatch-usage-sessions],

: [https://doi.acm.org/10.1145/3025453.3025817 https://doi.acm.org/10.1145/3025453.3025817],

: [http://jultika.oulu.fi/Record/nbnfi-fe201801162071 http://jultika.oulu.fi/Record/nbnfi-fe201801162071],

: [https://doi.org/10.1145/3025453.3025817 https://doi.org/10.1145/3025453.3025817],

: [https://people.eng.unimelb.edu.au/vkostakos/publications.php?key=RN11992 https://people.eng.unimelb.edu.au/vkostakos/publications.php?key=RN11992],

: [https://core.ac.uk/display/157871231 https://core.ac.uk/display/157871231],

: [https://academic.microsoft.com/#/detail/2591257477 https://academic.microsoft.com/#/detail/2591257477]

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