{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T15:09:38Z","timestamp":1761664178948,"version":"3.41.2"},"reference-count":64,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2020,12,14]],"date-time":"2020-12-14T00:00:00Z","timestamp":1607904000000},"content-version":"vor","delay-in-days":348,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Fitness and activity tracking devices acquire, process and store rich behavioural data that are consumed by the end-user to learn health insights. This rich data source also enables a secondary use of being part of a biometric authentication system. However, there are many open research challenges with the use of data generated by fitness and activity trackers as a biometric source. In this article, the challenge of using data acquired from low-cost devices is tackled. This includes investigating how to best partition the data to deduce repeatable behavioural traits, while maximizing the uniqueness between participant datasets. In this exploratory research, 3 months\u2019 worth of data (heart rate, step count and sleep) for five participants is acquired and utilized in its raw form from low-cost devices. It is established that dividing the data into 14-h segments is deemed the most suitable based on measuring coefficients of variance. Several supervised machine learning algorithms are then applied where the performance is evaluated by six metrics to demonstrate the potential of employing this data source in biometric-based security systems.<\/jats:p>","DOI":"10.1093\/cybsec\/tyaa021","type":"journal-article","created":{"date-parts":[[2020,12,14]],"date-time":"2020-12-14T08:24:28Z","timestamp":1607934268000},"source":"Crossref","is-referenced-by-count":2,"title":["Low-cost fitness and activity trackers for biometric authentication"],"prefix":"10.1093","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8613-8200","authenticated-orcid":false,"given":"Saad","family":"Khan","sequence":"first","affiliation":[{"name":"School of Computing and Engineering, University of Huddersfield, Huddersfield, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Simon","family":"Parkinson","sequence":"additional","affiliation":[{"name":"School of Computing and Engineering, University of Huddersfield, Huddersfield, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Na","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Computing and Engineering, University of Huddersfield, Huddersfield, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liam","family":"Grant","sequence":"additional","affiliation":[{"name":"School of Computing and Engineering, University of Huddersfield, Huddersfield, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2020,12,12]]},"reference":[{"key":"2020121403240858600_tyaa021-B1","doi-asserted-by":"crossref","first-page":"e110","DOI":"10.2196\/jmir.9157","article-title":"Using fitness trackers and smartwatches to measure physical activity in research: analysis of consumer wrist-worn wearables","volume":"20","author":"Henriksen","year":"2018","journal-title":"J Med Internet 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