How to install a certificate on Mac OS X

1.Download your .p12 certificate 2.Open Keychain 3.Click on Login and Certificates on the left 4.Drag your certificate in the right area 5.Enter the password Done! What do you need to use InstaSign and get unlimited free iOS applications? 1.Mac OS X 2.iPhone or iPad 3.UDID registration + certificate 4.InstaSign for OS X Note: You need to register the UDID of your device and get a certificate before you can sign and install the signed applications.