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In order to solve the problem of people usually forget their USB Flash Disk,our team designed a device.
Install USB Flash Disk with RFID then download the special App software in the cellphone.
Use the App software to activate USB Flash Disk,
when it is within 5 meters will not issue a warning,
and when it more than 5 meters the USB will issue a warning, also the cellphone will start to vibrate.
Moreover,we put laser pen into the USB Flash Disk, in order to make it easier for users to report their file.
China University of Technology