There is an entire industry dedicated to helping people sit correctly at a desk with the correct posture, and anecdotal evidence would show that some of the resulting products are quite ineffective. With this thought in mind, design student Ziyun Qi has created an interesting alternative.
The result is a vest that contains several bladders which can be inflated with a small pump - all controlled by an Arduino. The bladders are inflated every twenty minutes and help give the wearer a physical reminder to get up or re-consider their posture and seating arrangement. Certainly something different, and demonstration in the following video:
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