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This is a bookmark, and it is different from those made by paper.It is environmental protection with light and
page scanner at the bottom.
If we take it when we are reading, the Fingerprint reader will save our datas. When we not reading, we just need
clip it on the book.
Huazhong University of Science and Technology
Wuhan, China
Huazhong University of Science and Technology
Wuhan, China
