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Privacy is being more and more important for us. Sometimes we don’t want our mobile phone messages being seen by others, especially strangers, but it’s a little bit rude to say that to them. So this Smart Mobile Foil is designed to cover the messages on your mobile phone. When your eyes are on the scope of the screen , you can clearly see the content on the screen .But when your eyes are beyond the scope of the screen , you will see a white - green gradient. Generally, others’ eyes are beyond the scope of the screen , so they won’t see the content on the screen.
Xiaoyu Hao Ting Zhang Jiankang Wang