Abstract
Smart city is one of the major trending topics of the 4th industrial revolution. It can be described as a city that operates with the help of information communication technology. The world’s population explosion has made the need for smart city ever significant considering the UN statistics. In other to develop new ideas for future technologies of smart cities, this study aimed at reviewing existing literature related to the technologies that will form an integral part of the future smart cities. This study adopted an efficient literature review method by sourcing published journal articles, books and conference articles from web of science and scopus database. The study revealed moveable smart city, automated pandemic detecting city, driverless cars, online central government treasury app, automated self-repairable smart city, 100% online education, financial technology and national e-voting system as key technologies of the future smart cities.