“…Most of the studies (24 out of 35 studies that correspond to 68.57%) focussed on specific technologies and technologyenhanced services in the context of smart city for the individual use. The investigated individual technologies include blockchain technology [89], Cloud IoT [90], IoT-based smart wearable healthcare devices [22,59,79], smart home technologies [76], smart energy technology [74], e-government [62,72,73,91], mobile applications [63,70,77,80,83], mobile payment [68,78], smart mobility [75], autonomous vehicles [60,82,84], contact tracing apps [61] and IT for public safety [92].…”