diff --git a/NFC_Reader.py b/NFC_Reader.py
index c0a151c..9c8dc39 100644
--- a/NFC_Reader.py
+++ b/NFC_Reader.py
@@ -3,7 +3,7 @@ import nfc
 import subprocess
 import requests
 import oled
-import subprocess
+import asyncio
 
 url="http://172.16.1.105/api/"
 
@@ -19,9 +19,10 @@ def get_reader():
 def onTagSense(tag):
     id = int.from_bytes(tag.identifier, "big")
     response = requests.post(f"{url}tag_id", data={"id":id})
+    
     #try:
     if response.json()["mode"] == "balance" or response.json()["mode"] == "message":
-        subprocess.run(oled.balance(response.json()["username"], response.json()["balance"]))
+        oled.balance(response.json()["username"], response.json()["balance"])
         return True
     #except:
     #    None
diff --git a/oled.py b/oled.py
index 5c6ac02..22f1fbb 100644
--- a/oled.py
+++ b/oled.py
@@ -10,12 +10,12 @@ def clear():
     display.fill(0)
     display.show()
 
-def balance(user_name, balance):
+async def balance(user_name, balance):
     clear()
     display.text(str(user_name), 50, 0, (255,255,255), size=1)
     display.text(str(balance), 0, 15, (255,255,255), size=2)
     display.show()
-    time.sleep(5)
+    await time.sleep(5)
     clear()
 
 def error(code):