Is there a wildcard AID for NFC to read any MiFare DESFire EV1 tag?

Question

The NXP app for Android can read MiFare DESFire EV1 tags, so I figured there must be a way to do similar in an app on iOS13. However, it appears I must know in advance the ISO7816 AID to populate the select-identifiers property of my app's Info.plist before I will get tags from the reader session. I believe my code is correct to setup the reader session and begin. But I my didDetect callback never fires. Is there some sort of wildcard select-identifier that would present all tags to my callback?

Core NFC

1.6k

Posted by

davefromorlando

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Answer 1

the same problem here

Posted by

lucascorrea

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Answer 2

Did you try to read directly with some code like that ?

    func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
        print("tagReaderSession")
        session.connect(to: tags.first!) { (error: Error?) in
            if error != nil {
                session.invalidate(errorMessage: "Connection error. Please try again.")
                return
            }
            
            switch tags.first {
            case .miFare(let discoveredTag):
                print("Got a MiFare tag!",
                      discoveredTag.description,
                      discoveredTag.identifier as NSData,
                      discoveredTag.mifareFamily)
                if case let NFCTag.miFare(tag) = tags.first! {
                    session.connect(to: tags.first!) {
                        (error: Error?) in
                        if error != nil {
                            session.invalidate(errorMessage: "Connection error. Please try again.")
                            return
                        }


                        &#x2F;* Here, do what you want with the tag, such as :  *&#x2F;

                        let command: [UInt8] = [
                            0x90, &#x2F;* CLA : PICC *&#x2F;
                            0x6A, &#x2F;* INS : GET AIDS *&#x2F;
                            0x00, 
                            0x00,
                            0x00  &#x2F;* length *&#x2F;
                        ]
                        let data = Data(bytes: command, count: command.count)
                        let response:[UInt8] = try await self.tag!.sendMiFareCommand(commandPacket: data).bytes
                    }
                }
...

Posted by

kikan

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Is there a wildcard AID for NFC to read any MiFare DESFire EV1 tag?

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