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Starting from iOS 13 it is possible to write Ndef tags. NFCEx adds writing support to iNFC library... It requires some configuration. With NFCEx class the reading and writing is done inside the class...
link: an NFC Tag in Bytes, I have modifed @Erel's NFCEx CreateTextNDEFMessage function and by using...
link: Creating a URL message: Private Sub CreateURLNdefMessage (Url As String) As Object Dim u As Nati...
link: The class I posted supports text messages. There is no method to write binary data. You will need to...

That thread mentions NFCEx code, where can this be found? Also is this NFCEx different from the built-in NFC library, or are they both required? Thanks...
link: https://www.b4x.com/android/forum/pages/results/?query=b4i+nfcex...
link: NFCEx is a class that adds some features to the iNFC library, however it won't be simple to...
link: Thank you, are you able to summarise what exactly NFCEx is and tie it into my second question so...

) Class - Nfc - Nfcex Class - Write Ndef Tags Class - Notifications - Usernotificationcenter Class Class...

The NFC / NFCEx libraries work with NDEF tags. See NFCEx code. With some Objective C knowledge, it should be possible to add support for NFCTagReaderSession....
link: Thanks for the reply I'll take a look at NFCEx and see what i can do, unfortunately my C...

Will the Server actually be updated with Xcode 11? I tried running your new NFCEx example, but got some errors. Walter...

Writing is now supported: https://www.b4x.com/android/forum/threads/nfcex-class-write-ndef-tags.110726/...

You can read and write NDEF tags with this class: https://www.b4x.com/android/forum/threads/nfcex-class-write-ndef-tags.110726/ It will require some Objective C knowledge to extend it to support Mifare tags....

/android/forum/threads/nfcex-class-write-ndef-tags.110726/#content...

tag with URL data (you can use this: https://www.b4x.com/android/forum/threads/nfcex-class-write-ndef...