To members of the public they are known as Prince Harry and Meghan Markle, but to their royal aides and bodyguards they are just plain "David Stevens" and "Davina Scott".
It has been revealed that the famous couple are regularly given alternative monikers – secret code names that use the initials "DS" as a nod to their official title, the Duke and Duchess of Sussex, to prevent their contact details from falling into the wrong hands.
And as for Prince William and Kate Middleton, the couple are saved as the more modest "Danny Collins" and "Daphne Clark" in their aides' contact lists, Reports The Daily Mail.
The initials "DC" in the secret code names allude, of course, to the royal couple's title – the Duke and Duchess of Cambridge, reports the Daily Star.
"If anyone got hold of a phone belonging to a royal aide or security team member, they won't find Harry Windsor and Meghan's names in it," said a royal source, adding, "it is far too risky in the wrong hands. They get given code names but they are changed regularly for obvious reasons."