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People often forget to take something after they went out. For example, wallet, keys, flash drives, mobile phones, face masks ... and so on. The question mark is pegged to remind people "did I remember to take this with me?. When we saw the question mark, with no doubt, we unconsciously asked ourselves some questions, so it could be placed in a place which is easy to be seen and passed by and peoples concentration could easily be caught. Except the warning effect, you can also hang your stuff on it to make sure that you wont forget to take it when youre about to leave the house.
National Yunlin University of Scien
National Yunlin University of Science & Technology