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Starting from iOS 13 it is possible to write Ndef tags. NFCEx adds writing support to iNFC library. Before you start with writing, make sure to follow the "reading" tutorial and get the example working: https://www.b4x.com/android/forum/threads/nfc-reading-ndef-tags.84784/#post-536918 It requires s
link: After a few days of banging my head against the table, I finally figured out how to send data to an NFC Tag in Bytes, I have modifed @Erel's NFCEx Cre
link: Thank you Erel, this works great for sending Text data, but how about sending Data in Bytes? Thanks, Walter
link: You will need to build the payload yourself. There is no API for binary messages. Another option is to use base64 strings.

NFCEx is a class that adds some features to the iNFC library, however it won't be simple to support non-NDEF tags. You will need good understanding of Objective C and native iOS.
link: Thank you, are you able to summarise what exactly NFCEx is and tie it into my second question so I'm on the same page, is it a separate NFC library to
link: 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? Than
link: https://www.b4x./?query=b4i+nfcex

You must use B4i v5.51+ with NFC. Updates: - There was a bug in the example code related to reading of UTF 16 text messages.
link: In a new thread in the questions forum. NFC tags are passive. They do not send anything. If you emulate a NFC tag with a device (not possible with iO
link: I mean a device NFC sending a number (example: 34892018920 this number will be changed each time) and the iPhone-App-NFC have to read that number.. T
link: It is not possible to read the tag UID (iOS limitation).

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 knowledge stops at C++
link: Hello Does the current b4i version and iNFC v1.1 support read/write RAW data bytes from nfcv (iso-15693) tags? ( introduced in the latest ios versi

Ola Erel's Overview from Walts B4xGoodies B4I Class - Ads - Beaconparser B4i Class - Colour - Color Picker Class - Database - Keyvaluestore Class - Database - Rdc - Dbrequestmanager Class - Date/time - Anotherdatepicker B4i Class - Edittext - Numpad B4i Class - Gps/location - Altimeter Class -
link: 0 - July 2019 Library - Firebase - Firebase 2.50 - April 2020 Library - Firebase - Firebase February 2021 - Local Mac Library - Firebase - Sign In Wit

Start with these instructions: 1. Add the associated domains capability and download and update provision profile: https://www.b4x..png 2. Based on the NFCExtra example. Add this line: #Entitlement: <key>com.apple.developer.associated-domains</key><array><string>applinks:b4x.com</string></array>
link: Note that most devices do not support this feature. It is only supported by iPhone XS+ devices. If you have such device I can help you implement this
link: Hi all, according to the NFC Core documentation for xcode 13, it is possible to enable NFC Tag reading in the Background. https://developer.apple.?lan
link: Hi Erel, yes I do have an iPhone XS, how would I implement this feature? Thanks

I've tested this code with ndef tag: Public Sub Scan (DialogMessage As String) NFC.Scan(DialogMessage) Wait For NFC_TagConnected (Success As Boolean, Tag As Object) If Success Then Try Dim InternalTag As NativeObject = Tag.As(NativeObject).GetField("_tag")
link: nfc.Supported = true, but never detects anything.
link: Thanks Erel!... I'm trying to read an NFC card, but when I hold the card close to the iPhone, it never detects anything.
link: "nfc tools" for iphone don't work either. only the shortcuts app Works.

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

Your code cannot work. There is no relation between the B4INFC class code and any other class instance. Working example: Sub Class_Globals Private Root As B4XView Private xui As XUI Private Panel1 As B4XView Private nfc As NativeObject End Sub Public Sub Initialize End Sub 'This
link: Hello I'm trying to get a rise event call from objective C to a b4i sub This works: Sub nsdata_sub(x As NativeObject) Dim NSS As String = x end sub

also iPhone4 doesn't have the antenna NFC, you will need iPhone6+
link: Hello, I have addd the feature "NFC" for my iOS APP. I have change my Bundle ID from "Wildcard" com.alfano.b4i.* to "Explicit" com.alfano.

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