Smart buildings (and smart cities) are nothing new, but TechRadar Pro was invited to Singapore to see the potential next step in making office buildings more intelligent than ever before.At JTC Summit, the building owners work alongside a complete digital twin of the building, recreated meticulously in the virtual world, to allow them to make decisions that range from boosting efficiency to just keeping the right lights on.JTC Summit is also populated with a number of adorable robots, who are able to carry out a variety of tasks, from package delivery, spotting maintenance alert, or just patrolling the halls to spot any potential issues.At our visit to JTC Summit, James Tan, Director, Sensors and IoT, GovTech, notes that the eventual plan is to roll out Smart District OS across the whole of Punggol Digital District, an area of around 50 hectares, giving government, business and citizen alike a much smarter way to live.In control During our visit, Tan showed off a range of demos showcasing the mind-boggling array of information layers that the system is equipped with, starting with live bus arrival times, the number of empty car parking spaces on certain streets, and the tracking of taxis across the island - namely, which ones are free, for easy hailing."