*2.3. Feasibility and Usability of mHealth Systems*

In spite of findings that show that a lack of focus on usability and feasibility issues for mHealth systems would lead to an increase in overall costs and delays in successful implementation, few mHealth interventions have explained the attributes that contribute to their success and the aspects that have led to failed implementations [35–37]. A 2013 systematic review of mHealth literature by Fiordelli et al. identified that only 14% of the studies reported on user assessment of the technology [38].

Through post-study questionnaires in the first user study, Vos et al. managed to surface issues with Inspirun on the accuracy of speed measurements which were later addressed in the third release of Inspirun [16].

In mHealth, understanding the privacy preferences of users and their acceptability of the technology is a determining factor in its success and adoption due to the amount of sensitive data typically collected by the apps. Very few studies, however, report on the privacy-related aspects of the mHealth systems they adopt [13,39].
