diff --git a/src/arduino/card_scanner.ino b/src/arduino/card_scanner.ino
index e8fbe38..ddbe7a2 100644
--- a/src/arduino/card_scanner.ino
+++ b/src/arduino/card_scanner.ino
@@ -32,7 +32,7 @@ void setup() {
 
 // iteration
 void loop() {
-  // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
+  // Reset the loop if no new card present on the reader
   if (!rfid.PICC_IsNewCardPresent()){
     return;
   }
@@ -41,6 +41,7 @@ void loop() {
     return;
   }
   
+  // Send UID of token to the serialport
   Serial.println(rfid.uid)