While the Valhalla greenkeepers were busy getting the course ready for the resumption of the US PGA Championship following heavy rain in the area, Rory McIlroy was in the clubhouse enjoying some social time with friends.
Only, just as the world No.1 was punching his passcode into his phone, a camera from the tournament's broadcaster CBS was lurking over his shoulder - and the whole world saw it.
Admittedly, we could have all guessed it, as it turns out it was 4589 - or 4/5/89 - McIlroy's date of birth.
It didn't last long though, he tweeted this shortly after:
Passcode changed... Now time to play some golf!— Rory Mcilroy (@McIlroyRory) August 10, 2014