How is the USB dongle made
The computer dog, that is, the dongle, and the dongle now referred to is generally a hardware dongle. It is something similar to a USB flash drive, and it is an anti-piracy method. Generally, a small part of the program or the decrypted part is integrated into the hardware of the dongle to prevent software piracy. The dongle is often regarded as a hardware protection. It is a small plug-in that can be attached to the computer's parallel port, serial port, or USB. It contains the EPROM burned by the manufacturer and a customized application specific integrated circuit. The principle of dongle protection is that the software developer often checks the cell in the dongle in the program and compares the return value. This check can be directly reading the cell or using some internal algorithm (the cell is protected and cannot be directly read).