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Usually the blind can not perceive the day and night,so maybe there are some troubles to them if the time divided into 12 scale.For example,they don't know the time in the day or night when they wake up because they can not distinguish day and night easily like a normal person.
"Feel time" is a kind of watches which can make the blind not puzzled about the time in the day or night by the way of dividing the time into 24 scale. To which time, the time points would raised so the blind can know the time by touching.
Wenjuan Wei,Mo Hu,Yang Chen,Xiaolong Lou