Secure Server Runnersworld accepts payment by most major credit or debit cards. Your card details will be ENCRYPTED to ensure a SECURE transfer of all data. We use a secure server & 128-bit encryption service enabling visitors to our site to be able to buy safely over the Internet. We know of no documented cases of credit card fraud using our shopping system over the Internet. All credit card numbers are encrypted in the software when the order is placed. They are only decrypted after they reach our secure server computer. They are not held in clear text on any web site.