The iCloud security code is a security measure that you must have set up
relating to keychain and the info stored there. If you can remember the code,
or get it sent via SMS message, you should be able to get back into your Mac,
or approve the mac if the iPhone is an already trusted device in
Hi sorry for any spelling mistakes but I am dictating this message I have just
reinstalled my MacBook air and everything went fine until I got an unexpected
message about an iCloud security code I have never heard about this code before
and I don't know what it is I can apparently a proof this
