PIN SITES' PIN SITES are websites that allow users to securely store and access personal information such as passwords, credit card numbers, and other sensitive data. They are designed to provide a secure environment for users to store their information, and they are often used by businesses and organizations to protect their customers' data. PIN SITES are also known as password vaults or password managers. ALLEYS is a 6-letter word that refers to narrow passages between buildings or streets, often in urban areas.