diff --git a/PROJECT/drivers/mfrc522/mfrc522data.c b/PROJECT/drivers/mfrc522/mfrc522data.c
index 5caf113..88b4d8c 100644
--- a/PROJECT/drivers/mfrc522/mfrc522data.c
+++ b/PROJECT/drivers/mfrc522/mfrc522data.c
@@ -39,6 +39,19 @@ void set_abonement_data(abonement_data* data)
     memcpy(&abonement, &data, sizeof(abonement_data));
 }
 
+uint32_t get_mifare_uid()
+{
+    uint32_t card_uid = 0;
+    uid_struct * uid = get_uid();
+
+    if(uid->size == 4)
+    {
+        memcpy(&card_uid, &uid->uidByte[0], 4);
+    }
+    
+    return card_uid;
+} 
+
 /**
  * Calculates the bit pattern needed for the specified access bits. In the [C1 C2 C3] tuples C1 is MSB (=4) and C3 is LSB (=1).
  */
@@ -287,6 +300,7 @@ mifaredata_t* init_mifare_card_data()
     CPU_INT32U password;
     GetData(&PassDescAdmin, &password, 0, DATA_FLAG_SYSTEM_INDEX);
     abonement.uid[0] = password;
+    abonement.number_abonement = get_mifare_uid();
 
     return &mifare_card_data;
 }
diff --git a/PROJECT/drivers/mfrc522/mfrc522data.h b/PROJECT/drivers/mfrc522/mfrc522data.h
index 20f7585..84aa59a 100644
--- a/PROJECT/drivers/mfrc522/mfrc522data.h
+++ b/PROJECT/drivers/mfrc522/mfrc522data.h
@@ -41,4 +41,8 @@ extern bool is_empty_mifare_card();
 extern bool need_clear_bonus();
 extern void stop_card_working();
 
+/// @brief 
+/// @return 
+uint32_t get_mifare_uid();
+
 #endif
\ No newline at end of file