It's like something got lost in translation here. Someone had the great idea (or more likely, stole Tesla's idea) to have a credit card key. Something that could stay in the wallet. But the stay in the wallet part never got comprehended. So now it's just one more mostly useless, confusing feature put out by BMW recently.
The whole point of comfort access is to not have to dig around for your keys. Be it an actual key or facsimile of one
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