[Bypassing biometrics article] SecuBank verification example

SecuBank-Biometrics.swift

@IBAction func startVerification(_ sender: Any) {
        let myContext = LAContext()
        let myLocalizedReasonString = "Verifying...."
        var authError: NSError?
        
        if myContext.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &authError) {
            myContext.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: myLocalizedReasonString) { (success, evaluateError) in
                DispatchQueue.main.async {
                    if success {
                        self.verificationStatusLabel.text = "✅ Verification successful"
                    } else {
                        self.verificationStatusLabel.text = "❌ Verification failed"
                    }
                }
            }
        }
    }