diff --git a/main.py b/main.py
index 5fd8f8f..b5e19d0 100644
--- a/main.py
+++ b/main.py
@@ -49,6 +49,7 @@ import ctypes
 from fido2.ctap2 import Ctap2
 from fido2 import cbor
 import nfc
+from fido2.nfc import CtapNfcDevice
 
 config = configparser.ConfigParser()
 
diff --git a/test.py b/test.py
index e07f922..2b17600 100644
--- a/test.py
+++ b/test.py
@@ -1,26 +1,38 @@
-import nfc
-import time
+from fido2.pcsc import CtapPcscDevice
+from fido2.utils import sha256
+from fido2.ctap1 import Ctap1
+import sys
 
-def connected(tag):
-    print("Tag detected:", tag)
-    return True
 
-def read_nfc():
-    try:
-        clf = nfc.ContactlessFrontend('usb')  # Ensure this matches your connection
-        print("NFC reader initialized.")
-    except Exception as e:
-        print("Failed to initialize NFC reader:", e)
-        return
+dev = next(CtapPcscDevice.list_devices(), None)
+if not dev:
+    print("No NFC u2f device found")
+    sys.exit(1)
 
-    try:
-        while True:
-            print("Waiting for NFC tag...")
-            clf.connect(rdwr={'on-connect': connected})
-            time.sleep(1)
-    except Exception as e:
-        print("Error reading NFC tag:", e)
-    finally:
-        clf.close()
+chal = sha256(b"AAA")
+appid = sha256(b"BBB")
 
-read_nfc()
+ctap1 = Ctap1(dev)
+
+print("version:", ctap1.get_version())
+
+# True - make extended APDU and send it to key
+# ISO 7816-3:2006. page 33, 12.1.3 Decoding conventions for command APDUs
+# ISO 7816-3:2006. page 34, 12.2 Command-response pair transmission by T=0
+# False - make group of short (less than 255 bytes length) APDU
+# and send them to key. ISO 7816-3:2005, page 9, 5.1.1.1 Command chaining
+dev.use_ext_apdu = False
+
+reg = ctap1.register(chal, appid)
+print("register:", reg)
+
+
+reg.verify(appid, chal)
+print("Register message verify OK")
+
+
+auth = ctap1.authenticate(chal, appid, reg.key_handle)
+print("authenticate result: ", auth)
+
+res = auth.verify(appid, chal, reg.public_key)
+print("Authenticate message verify OK")
\ No newline at end of file