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According to recent research, many people don't go sleep until late at night because of spending time with smartphone in spite of insufficient sleep. They want to shorten using smartphone late at night, but it's not easy.
"100 Things before you go to bed" helps people could reduce using smartphone futilely until late at night through witty way. It can make smartphone as a light source of lamp. it makes separation between user and smartphone and can lead user do the other actions not smartphone. and another component, guidebook gives user tips of experience, lost but valuable. now, you can have a chance, a night out of SmartPhone.
Seoul, South Korea
Lee junghwa Lee eunjong