diff --git a/app/src/main/java/pl/lebihan/authnkey/MainActivity.kt b/app/src/main/java/pl/lebihan/authnkey/MainActivity.kt
index 92eb5f0..8bd94a8 100644
--- a/app/src/main/java/pl/lebihan/authnkey/MainActivity.kt
+++ b/app/src/main/java/pl/lebihan/authnkey/MainActivity.kt
@@ -504,7 +504,13 @@ class MainActivity : AppCompatActivity() {
                 }
 
                 resultText.text = getString(R.string.verifying_pin)
-                val authenticated = withContext(Dispatchers.IO) { protocol.getPinToken(pin,4) }
+                // get uvAuthToken with permissions for CTAP2.1 keys
+                if(!usePreviewCommand) { 
+                    val authenticated = withContext(Dispatchers.IO) { protocol.getPinToken(pin,4) }
+                }
+                else {
+                    val authenticated = withContext(Dispatchers.IO) { protocol.getPinToken(pin,4) }
+                }
                 if (!authenticated) {
                     if (isNfcDisconnected()) {
                         showNfcReconnectDialog()