Table 4. Qualitative results demonstrating technology acceptability.

Theme	Example quotation
	Perceived usefulness
SMS reminders and real-time adherence monitor reminded participants to take their medications	Whenever I would receive your SMS, immediately I would prepare and take my medication. ~Female, 33 years, TB patient, Daily SMS arm R: I put the monitor near my bed, and when I look at it in the morning, I remember that one of the things I need to do in the morning is to take my drugs. ~ female, 33years, TB patient, Daily Arm A
Receiving SMS reminders and being monitored implied care	I would feel good after receiving an SMS because I know that you are caring about my life and want me to get well. So, I tried to take my drugs well so that you do not think that you are minding about someone who does not mind about his own life. ~ Male, 41years, TB patient, Weekly SMS Arm.
Monitoring encourages medication adherence	Because I knew you were monitoring the way I took my medication through the device, I made sure I was taking my medication because I did not want to disappoint people who cared about me. ~ Male 25 years, TB patient, Daily SMS Arm.
SMS notifications to social supporters enabled provision of social support	Whenever he (social supporter) would receive your message, he would call me to check how I was feeling and remind me take medication, and I would take my medication immediately. ~ Male, 41 years, Weekly SMS Arm. Whenever he sees your message, he tells me to open the device and swallow my drugs before the computer detects that I have not swallowed the drugs. Whenever he starts telling me this, he won’t stop until I have taken the drugs. ~ female, 56 years, TB patient, Daily SMS Arm
Challenges
Possibility of unintended TB status disclosure	One time I went with it at my mother’s house, and when she saw the monitor, she asked what it was and I had to explain, and in the process she ended up knowing that I had TB. I think if I had not carried the device with me, she would not have known. ~Female, 33 years, TB patient, Daily SMS Arm.
Inability to address structural barriers to non-adherence	When I got sick, I became too weak to continue working. So, sometimes when I have no food, and sometimes I have no money for transport to the clinic, thus, I still miss taking the medication even if I receive the SMS reminder ~ Female, 38 years, TB patient, Weekly SMS Arm B.