Table 2.

Search string

Scope	String
Mobile device	(smartphone OR smart phone OR touchscreen OR mobile phone OR mobile device OR tablet OR phablet OR mobile) AND
Software	(application* OR app OR service OR operating system OR android OR ios OR windows OR mobile application*) AND
Health	(health* OR medic* OR clinic* OR care OR patient) AND
mHealth	(mobile health OR mHealth OR m-Health) AND
Usability	(usab* OR understandab* OR learnab* OR operab* OR attractiv* OR user experience OR user testing OR user-centered OR ease of use) AND
Elderly	(aging OR elderly OR older adult* OR elder*)