Table 2.

Studies that provide evidence for the second hypothesis.

Study	Methodology	Evidence
Schomakers et al [35]	Qualitative prestudy+quantitative main study (multimethod approach)	“As an important barrier, privacy requirements should thus be considered for mHealth [mobile health] apps for aftercare.”
Vassli and Farshchian [23]	Systematic review	“Many studies found that some or all participants have concerns about privacy. Privacy is regarded as a ‘bigger barrier to adoption, more so than usability.’”
Harrington et al [36]	Questionnaire (quantitative study)	“Privacy was among the leading concerns regarding SARs [socially assistive robots] among the current sample of older Americans.”
Choi et al [37]	Questionnaire+semistructured interview (multimethod approach)	“The participant feedback suggests that perceived privacy concerns, perceived usefulness, and curiosity to technology were strong factors when considering which device to have installed in their home.”
Tural et al [38]	Web-based and in-person surveys+focus group (multimethod approach)	“Privacy and security of personal information seem to be a core issue for willingness to use smart home products as also highlighted by others.”
Attié et al [39]	Survey	“Privacy concerns are the main obstacles to the adoption of SCOs [smart connected objects].”
Lederman et al [31]	Review	“Other researchers suggested that risk perception that is influenced by concern over privacy, security and the learning-curve can have a negative impact on the adoption of IoT [Internet of Things] solutions by medical staff...These risks to privacy and security are a major challenge for IoT in healthcare.”
Karlsen et al [40]	Review	“The lack of security and privacy was a prominent concern due to the constant recording of data and location tracking that comes with the use of a smartwatch.”
Gimpel et al [41]	Survey	“In healthcare digitalization, privacy concerns are one of the major barriers for individuals to accept and use healthcare technologies.”
Mujirishvili et al [42]	Scoping review	“With privacy being a major barrier to video-based AAL [active and assisted living] technologies, security and medical safety were identified as the major benefits across the studies.”
Wilczewski et al [43]	Questionnaire	“Participants commented on privacy concerns with providing personal information to the chatbot. This category had the majority of negative comments (n=10/15 codes; 66.7%) with some participants finding the chatbot ‘a bit intrusive.’”