Your card, which sees itself as a payer of AUD, gets a request for a transaction in GBP. This research suggests it will authorize the transaction even if it is above whatever normal local limit you have on AUD transactions.
Whether that's actually true or not, is unknown at this stage - this was a test on a UK contactless card, so maybe we have a slightly different arrangement than your Australian contactless card would.
It's also fairly unlikely that the payment processors would accept a transaction higher than the contactless cap, just because it's in a foreign currency.
It's also entirely possible that they don't bother enforcing a limit because the UK banks involved won't accept any foreign currency contactless transactions. I've never tried to use my UK contactless cards abroad.
Comments
This isn't about the terminal.
Your card, which sees itself as a payer of AUD, gets a request for a transaction in GBP. This research suggests it will authorize the transaction even if it is above whatever normal local limit you have on AUD transactions.
Whether that's actually true or not, is unknown at this stage - this was a test on a UK contactless card, so maybe we have a slightly different arrangement than your Australian contactless card would.
It's also fairly unlikely that the payment processors would accept a transaction higher than the contactless cap, just because it's in a foreign currency.
It's also entirely possible that they don't bother enforcing a limit because the UK banks involved won't accept any foreign currency contactless transactions. I've never tried to use my UK contactless cards abroad.