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The launch of 5G networks, longer-lasting batteries and better sensors are among developments in the past two years that have brought the concept of unmanned drone doorstep delivery of parcels closer to reality here.

Professor Chua Chee Kai, Head of the Engineering Product Development Pillar at SUTD, joins an exclusive interview with Lianhe Zaobao. Prof Chua has developed a prototype food printer, which he plans to put on the market soon.