Originally Posted by
MSPeconomist
The Centurion lounges seem able to see whether you've ever used the lounge before. If so, this might help someone to enter without the physical card.
OTOH, I'm surprised that someone wouldn't carry their Plat card all the time.
How far back can the Centurion lounge see previous visits? I was in HK Centurion Lounge in February 2019.
I think the UK AMEX Platinum have a FTF so it's kind of useless for foreign spend.