Pin cracking, which is a popular cracking method, actually depends on wps of routing.

WPS is the function of connecting to WiFi by pressing the WPS key, which saves the trouble of losing the password. This was originally a user-friendly function, but it was actually authenticated by a pin code.

After Pin authentication, the router will send the password to your network device in clear text, and your network device will automatically record and save the WiFi password and connect to the router.

The Pin code has 8 digits, which are divided into the first 4 digits and the last 4 digits. If the first four digits are correct, the routing will verify the last four digits. In fact, after three of the last four digits are confirmed, the last digit will also be confirmed, so there are 1 1000 possibilities. Assuming that the network is in good condition, the password will be sent once every 3 seconds, up to more than 9 hours.