One way of obtaining this active subjective data set is through a greater and incentivized engagement of the individual, by means of a smartphone application.
Many of these companies initially got off the ground by offering consumers a dongle that plugs into a car's onboard computer in order to allow users to view and track their car's data alongside things like fuel consumption, commute and travel times, and more, by way of a smartphone application.
The intervention consisted of a short web-based psychoeducation, and a step-by-step behaviour programme administered via a smartphone application.
Informed by models of behavioral change, a smartphone application was developed.
The mindfulness intervention, also an 8-week smartphone-based intervention with a minimal therapist contact (maximum time of 20 min per participant per week), consisted of a short web-based psychoeducation, and a step-by-step mindfulness practice programme, administered via a smartphone application.
Shouty is a smartphone application started by Nathan Hamblen, a platform engineer at Meetup.com.
Grindr, a smartphone application that connects gay men by GPS proximity, has more than 25,000 San Francisco users.
The company he co-founded, Premise, created a smartphone application that is now used by 700 people in 25 developing countries.
Likewise, "nudging" through a smartphone application, SmartAPPetite, is the subject of a study by J. Gilliland et al. in which they find the application was effective in increasing a sense of improved awareness and consumption of healthy foods.
Reliability and concurrent validity of a Smartphone application to measure hip joint range of motion were assessed by Charlton et al. [ 31].
