Chang of subject of USB memory connection from operating system to user Inserting a USB memory, the O.S unconditionally connected and exposed it to the network always USB connection via Secure USB Dongle ☞ Exposed to the network only when in use Restrict access via third-party smartphone apps. Thrid party access restriction by user phone number registration Stronger access restriction by password registration Block switching by timer setting USB memory isolation effect after accessing operation Gold-plated terminal life extension of USB memory Controlling the keep-alive or block-disk toggle When out of range of the Bluetooth signal When closing the smartphone app. The smartphone app. simultaneously supports Network Segregation PCIe cards, Secure Disk Cards, and Secure USB Dongle Other convenient and usefule features Disk button linked LED color setting Smartphone battery maximum charge level setting and charge level limit function → Use the battery, the only consumable part of a smartphone, for a long time. Supporting ON/OFF operation and timer operation with the switch on the Secure USB Dongle when setting the offline operation mode.