Table 2.

Basic information of interviewees.

Serial number	Surname	Gender	Age group (years)	Education Level	Career	Smart home device brand	Smart home purchase channel	Experience in use	Average hours of use per day
01	Jin	Female	61–65	Primary school	Retired workers	Tmall genie smart screen series	Child purchase	Less than half a year	Within 1 h
02	Wu	Female	51–55	High school	General workers	Tmall genie smart screen series	Child purchase	Less than half a year	Within 1 h
03	Wang	Female	56–60	College	Retired government employees	Xiaomi smart screen series	Child purchase	6 months – 1 year	1–3 h
04	Ban	Female	51–55	Graduate students	University teachers	Xiaomi smart screen series	Own	1–2 years	1–3 h
05	Liu	Female	56–60	Secondary school	Accounting	Tmall genie smart screen series	Child purchase	2–3 years	Within 1 h
06	Ma	Male	56–60	Undergraduate	Private enterprise bosses	Baidu smart screen series	Own	1–2 years	Within 1 h
07	Ding	Female	56–60	High school	Tea store operators	Xiaomi smart screen series	Child Purchase	Less than half a year	3–5 h
08	Gao	Female	56–60	College	Doing business	Tmall genie smart screen series	Child purchase	1–2 years	1–3 h
09	Ma	Female	51–55	Graduate students	University teachers	Baidu smart screen series	own	2–3 years	1–3 h
10	Liu	Male	61–65	High school	Self-employed	Tmall genie smart screen series	Child purchase	Less than half a year	1–3 h
11	Ye	Male	61–65	Junior high school	Retired officers	Xiaomi smart screen series	Child purchase	1–2 years	Within 1 h
12	Yu	Male	51–55	Undergraduate	Local civil servants	Baidu smart screen series	Own	Less than half a year	Within 1 h
13	Guo	Male	56–60	College	Local Police	Xiaomi smart screen series	Child purchase	Less than half a year	Within 1 h
14	Liu	Male	61–65	High school	Self-employed	Tmall genie smart screen series	Child purchase	Less than half a year	1–3 h
15	Yu	Male	56–60	High school	Doing Business	Xiaomi smart screen series	Child purchase	1–2 years	3–5 h
16	Yang	Male	61–65	Junior high school	Small store operators	Xiaomi smart screen series	Child purchase	Less than half a year	Within 1 h
17	Liu	Male	61–65	College	Construction contractor	Baidu smart screen series	Child purchase	1–2 years	Within 1 h
18	Zhang	Male	61–65	Graduate students	University teachers	Baidu smart screen series	Child purchase	Less than half a year	Within 1 h
19	Liu	Female	61–65	Junior high school	Retired employees	Baidu smart screen series	Child purchase	Less than half a year	3–5 h
20	Ban	Female	51–55	Undergraduate	Elementary school teacher	Baidu smart screen series	Own	1–2 years	Within 1 h
21	Huang	Female	56–60	Graduate students	University teachers	Xiaomi Smart Screen Series	Own	1–2 years	Within 1 h
22	Shen	Female	51–55	Junior high school	Innkeepers	Tmall genie smart screen series	Child purchase	Less than half a year	3–5 h
23	Wang	Male	61–65	College	Self-employed	Tmall genie smart screen series	Child purchase	1–2 years	Within 1 h
24	Cao	Female	56–60	Undergraduate	Local civil servants	Baidu smart screen series	Child purchase	1–2 years	Within 1 h