In early 2007, PayPal initiate an optional security key as an supplementary safety measure against fraud. A user account attached to a security key has a customized login process: the account holder enters their login ID and password, as ordinary but is then encouraged to push the button on the security key and enter the six-digit number produced by it. This two-factor validation is planned to stop an account from being negotiation by a malicious third party with no access to the physical security key. If a user misplace their key, they can alternatively authenticate by as long as the credit card or bank account number scheduled on their account.
The key at present costs US$5.00 for all users with no continuing fees. The alternative of using a security key with one's account is now available only to users registered in Australia, Germany, Canada, the United Kingdom(UK) and the United States(US).