Identities and destinations can be stored as QR codes for sharing in the physical world.
Nothing else in Masques is designed to be converted to a QR code (but you are, of course, free to do whatever you want) as everything other than identities and destinations are designed to be transferred in Masques. Identites and destinations help users locate the friends they want to share information with.
Labels: Text should be placed underneath or above the QR code to indicated if it is a destination or identity.
Colors: When QR codes are printed in color, destinations should have a green-ish tint and identities should have a blue-ish tint. Text should still be used with colored QR codes to be accessible to the color blind.