How to get text from MBP to visitors iPhone??

I need to get some text from my computer to a visitors iPhone. The text is a 63 character ASCI key for my WIFI network which they need access to. Many characters in the key are not on the iPhone keyboard thus it is not possible to type it on the iPhone. I have created a Note in Mail.app with the key which I used to sync to my iPhone to get it on the network. Unfortunately, a silly iTunes restriction means it refuses to let me connect another iPhone to sync a note to. I don't want to send my key via any unencrypted transport, this rules out sending a text message. It also means I can't email since the other phone can't access the network. Apple doesn't allow bluetooth file transfer, limits iTunes sync to a single iPhone and the phone can't access a network. I could probably create another user account on my Mac but that's pretty bothersome and then i'd have to remove it hrm

Anyone have any other idea's on how to get some text to this visitors iPhone (going to need to do this with the USB dock cable)?

 

Hows that gona work if the visitor phone can't access the 'Encrypted' network? the text is the passphrase to connect to the network LOL, besides email is not encrypted!!