“…In regard to efficiency, productivity, savings and profits, saved labor costs, service quality, customer control and customer satisfaction, hoteliers have introduced a variety of technologies such as self-check-in/check-out kiosks, voice-control system and service robots (Chen et al, 2015;Karadag and Dumanoglu, 2009;Liu and Hung, 2021). Owing to its ability to reduce contact between customers and service employees, the advantages of SST in achieving social distancing, enhancing cleanliness, reducing customers' perceptions of health risk, anxiety and sense of isolation have been highlighted amid the COVID-19 pandemic (Cheng et al, 2021;Shin and Kang, 2020). SST is, thus, regarded as an effective risk-reduction strategy for managing the effects of COVID-19 in the hospitality industry (Shin and Kang, 2020).…”