As the epidemic triggered instability and tension in the international trend, such as Vietnam's anti-China incident a few years ago, a major international factory was rioted in India and its assets were stolen, or the hard disk of an enterprise's important data was removed from the company by internal magic and external ghosts and lost its smart customers and financial data, all of which caused a huge impact on the enterprise's smart data process. Through the exclusive application program, the digital safe can be freely created on the computer hard disk space, and the smart development documents, financial files, or private files and other data that are worried about being seen by outsiders can be stored in the digital safe. The data can be automatically hidden, and the "smart disk" needs to be inserted to display the files. There is no need to worry about intentional people stealing your files. In other words, in case of an emergency, just unplug the "Smart Disk" in one second, and the files placed in the "Safe" will be invisible.