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Wearable sensors can provide reliable, automated measures of health behaviors in free-living populations. However, validation of these measures is impossible without observable confirmation of behaviors. Participants have expressed discomfort during the use of ego-centric wearable cameras with first-person view. We argue that mounting the camera on different body locations with a different lens orientation, gives a device recording affordance that has the effect of reducing surveillance anddoi:10.1145/3264900 pmid:32318649 pmcid:PMC7173726 fatcat:fdgpfzcji5enxbzp5g42f2owpe