在 iOS Swift 上通过 NFC 获取信用卡信息

Question

我正在开发一个 iOS 应用程序，希望通过 NFC 扫描智能卡（例如借记卡或信用卡）并提取卡号、持卡人姓名、卡类型（例如 Visa、MasterCard）和到期日等信息。我了解 iOS 支持 NFC，但我不清楚可以从支持 NFC 的卡访问哪些类型的数据。有没有办法使用 Core NFC 等框架在 iOS 上安全地提取这些信息？

我正在通过下面的NFCTagReaderSession实现扫描NFC，但无法提取卡详细信息：

@IBAction func nfcClick(_ sender: Any) {
    self.addHapticFeedback()
    
    guard NFCTagReaderSession.readingAvailable else {
        self.addErrorHapticFeedback()
        
        let alert = UIAlertController(title: "Scanning Not Supported", message: "This device doesn't support tag scanning.", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "Ok", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
        return
    }
    
    self.session = NFCTagReaderSession(pollingOption: .iso14443, delegate: self)
    self.session?.alertMessage = "Hold your iPhone 📱 Near the NFC Tag"
    self.session?.begin()
    
}

extension DashboardVC: NFCTagReaderSessionDelegate {
func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
    print("Session Activated.")
}

func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: any Error) {
    print("Error with Launching Session and description is:", error.localizedDescription)
}

func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
    print("Connecting To Tag")
    if tags.count > 1 {
        session.alertMessage = "More Than One Tag Detected, Please try again"
        session.invalidate()
        return
    }
    
    let tag = tags.first!
    
    session.connect(to: tag) { (error) in
        if let error = error {
            session.invalidate(errorMessage: "Connection Failed: \(error.localizedDescription)")
            return
        }
        
        print(tag, "*******")
        
        switch tag {
        case .miFare(let sTag):
            let UID = sTag.identifier.map { String(format: "%.2hhx", $0)}.joined()
            print("UID:", UID)
            session.alertMessage = "UID Captured"
            session.invalidate()
            
            DispatchQueue.main.async {
                print("Tag Detected")
            }
            
        case .iso15693(let sTag):
            let UID = sTag.identifier.map { String(format: "%.2hhx", $0)}.joined()
            print("ISO 15693 UID:", UID)
            session.alertMessage = "ISO 15693 Tag Detected"
            session.invalidate()
            
        case .iso7816(let sTag):
            print("ISO 7816 Tag Detected")
            
            let UID = sTag.identifier.map { String(format: "%.2hhx", $0) }.joined()
            print("ISO 7816 UID:", UID)
            
            //Attempt to read ATR (Answer To Reset)
          //                let atr = sTag.atr.map { String(format: "%.2hhx", $0) }.joined()
          // print("ISO 7816 ATR:", atr)
            
            session.invalidate()
            
        default:
            session.invalidate(errorMessage: "Unsupported tag type.")
            print("Unsupported tag type.")
        }
    }
}
}

Answer 1

你不太可能在 iOS 上做你想做的事情

正如文档所说

核心 NFC 不支持支付相关的应用程序 ID。

Apple 会限制您想要向其自身和选定合作伙伴读取的与借记卡或信用卡相关的任何信息。