When the "device in use" message appears when ejecting a USB flash drive, it is usually due to a program using files from the device. To do this, we need to close the program or window that is using the data on the USB drive and then try to eject it again.

With the increase in data breaches, the need for secure data storage has never been more urgent. Blockchain technology offers a solution to this problem, providing unparalleled data security and privacy.

Fingerprint, security, password, identification Nowadays fingerprint recognition technology is not a new technology, not only smart phones, even the door locks at home have also started to use fingerprint recognition technology.