what is google adsense pin

Google AdSense PIN is a unique 6-digit Personal Identity Number that Google sends to the payments address of AdSense publishers through international standard mail when their earnings reach the verification threshold. The PIN is used to verify the payment address of the AdSense account holder. Once the AdSense publisher receives the PIN mail, they need to enter the PIN exactly as it appears in the mailer in their AdSense account to verify their payment address. The PIN is usually sent from abroad and takes around 3 weeks to arrive. If the AdSense publisher hasnt received the PIN mail in 3 weeks, they can request a replacement PIN. The PIN is valid for 4 months from the date it is generated, and if it is not entered within this period, ads will stop showing on the AdSense account.