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We're looking to create a system for public transportation ticketing using NFC cards, but I'm wondering if there's any way to occupy an NFC that's non-writable, for example:

You put money in the card, once it's read and approved then a new balance will be written on the card and so on. Can it just be read, discount the money but no be written on again? Maybe the passenger will be left with -$1.50 at the end (when spending all the money and more) but that's something we'll solve from another end.

Thank you in advance and feel free to ask any additional questions.

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