PayPal is a well-known online payment system that facilitates the transfer of money between users. Founded in December 1998 and purchased by eBay in 2002, PayPal has become a ubiquitous tool for online transactions. It allows users to create an account and link it to a bank account or credit card, enabling quick and easy payments. PayPal's influence on e-commerce and peer-to-peer transactions has been significant, with the service expanding into various financial services.