According to the independent military testers and help desks, not all cards are supported by the open source code associated with Apple's work, particularly the recent CACNG or CAC-NG PIV II CAC cards.[7] Third party support for CAC Cards on the Mac are available from vendors such as Centrify and Thursby Software.[8] Apple's Federal Engineering Management suggest not using the out-of-the-box support in Mac OS X 10.6 Snow Leopard[9] but instead supported third party solutions. Mac OS X 10.7 Lion has no native smart card support. Thursby's PKard for iOS software extends CAC support to Apple iPads and iPhones.