SINGAPORE: Singaporean robot creator Wong Choon Yue raises his left hand and swipes it past a sensor in a high-five gesture.
Halfway across the room, a robot named EDGAR with an expressive face made of polyethylene, two hands and a torso atop a trolley with wheels, mimics the gesture, smacking its hand into that of Wong's wife and colleague, Pang Wee Ching.
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