Table 2.

Participants within each group were further classified based on their observed performance.

Category	Definition	Example
1 (novice user)	No experience with smartphones and basic capability with feature phone.	A user who does not own any sort of mobile phone OR a user who does own a feature phone but cannot demonstrate to satisfactory level that they can make a call, receive a call, and send or receive a text message without problems.
2 (intermediate or average tech user)	Perfect capability with feature phone, but limited capability with smartphones, may have been exposed to touch screen interfaces before.	A user who does own a feature phone and can demonstrate to a satisfactory level that they can make a call, receive a call, and send a text message OR a user who owns a smartphone and can demonstrate to a satisfactory level that they can make and receive a call but who cannot effectively send a text message.
3 (competent user or familiar with Internet technologies and mobile devices)	Adequate capability with (own) smartphone or with related touch screen devices (such as a tablet)	A user who owns a smartphone and can demonstrate satisfactorily that they can make or receive a call, receive a call, and send a text message OR a user who owns a tablet and can successfully send an email to the researcher.