WPS pin acts in the form of a secret code. It is created for safety purposes. It can be used while travelling or in the office. A printer generates it to be a secret code. It turns out to be handy when communication happens between several devices, where a printer is involved. Technically speaking, WPS Pin is a unique 8- digit number. It establishes a wireless connection between the printer and the router. Only a wireless router can set up a wireless communication with the printer using the WPS pin. Generation of a WPS Pin offers a great advantage in the form of prevention of any form of intrusion from unknown users. Generally, the WPS pin can be found on the printer screen.