[PCI DSS 1.x] 8.5.11 Use passwords containing both numeric and alphabetic characters

8.5.11 For a sample of system components, critical servers, and wireless access points, obtain and inspect system configuration settings to verify that password parameters are set to require passwords to contain both numeric and alphabetic characters
For Service Providers only, review internal processes and customer/user documentation to verify that customer passwords are required to contain both numeric and alphabetic characters