This work proposes the first model to examine the moderating effect of the COVID-19 syndemic on the acceptance and use of smartphones during the tourist shopping journey. The model was tested with 1800 tourists, 900 non-COVID-19 (i.e. prior to COVID-19) and 900 during the COVID-19 period. The results showed that: 1) the model has better fit for the COVID-19 period as its explanatory capacity for that stage is greater (R² = 0.773) than for the non-COVID-19 period (R² = 0.691); 2) tourists have increased their intention to use smartphones, especially to make payments for purchases; and 3) there are statistically significant differences in the impact of four of the six model variables (performance expectancy, effort expectancy, social influence, and arousal). This research advances knowledge of the impact of COVID-19 on the technological behaviour of tourists, has important practical implications, and raises new research questions about the future of tourism.

这项工作提出了第一个模型来检查 COVID-19 综合症对旅游购物过程中智能手机的接受和使用的调节作用。该模型在 1800 名游客、900 名非 COVID-19（即在 COVID-19 之前）和 900 名在 COVID-19 期间进行了测试。结果表明：1）该模型更适合 COVID-19 时期，因为它对该阶段的解释能力（R ²  = 0.773）比非 COVID-19 时期（R ² = 0.691); 2）游客使用智能手机的意愿增加，尤其是购物支付；3）六个模型变量中的四个（绩效预期、努力预期、社会影响和唤醒）的影响在统计上存在显着差异。这项研究提高了对 COVID-19 对游客技术行为影响的认识，具有重要的实际意义，并提出了有关旅游业未来的新研究问题。