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Flash disks are commonly used in our daily life for its portability. However, we need to safely eject it from the computer before it is disconnected, otherwise the flash might be damaged. It is troublesome to safely eject through clicking on the corresponding icon. Safe ejection is constantly ignored therefore. This redesign of flash disk transforms the ejection request into an intuitive movement. The ejection request will be sent incidentally to the computer when the user dive his/her finger into the circle of the flash disk. The user does not have to click eject icon on the computer and no damage will be caused.