Sometimes you're crammed into a line or on public transportation and don't have much choice other than to snuggle up with strangers. Industrial designer Siew Ming Cheng's Spike Away vest ensures unknown people won't want to squeeze next to you. Cheng created the vest for a workshop at the National University of Singapore. "Trains are usually crowded during peak hours. Everybody will push each other to try and get onto the train. How can I protect my personal space? The idea was then conceived," Cheng writes.
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