diff --git a/feature/rfid-read/source/read.py b/feature/rfid-read/source/read.py
index c69c5b0..a35bb50 100644
--- a/feature/rfid-read/source/read.py
+++ b/feature/rfid-read/source/read.py
@@ -27,10 +27,31 @@ if status != MIFAREReader.MI_OK:
 	exit(127);
 
 # [6] Print UID
-suid =        str(hex(uid[0]))[2:];
-suid += '-' + str(hex(uid[1]))[2:];
-suid += '-' + str(hex(uid[2]))[2:];
-suid += '-' + str(hex(uid[3]))[2:];
+hexCode = [];
+hexcode.append( str(hex(uid[0]))[2:] );
+hexcode.append( str(hex(uid[1]))[2:] );
+hexcode.append( str(hex(uid[2]))[2:] );
+hexcode.append( str(hex(uid[3]))[2:] );
+
+
+if( len(hexCode[0]) == 1 ):
+	hexCode[0] = '0' + hexCode[0];
+
+if( len(hexCode[1]) == 1 ):
+	hexCode[1] = '0' + hexCode[1];
+
+if( len(hexCode[2]) == 1 ):
+	hexCode[2] = '0' + hexCode[2];
+
+if( len(hexCode[3]) == 1 ):
+	hexCode[3] = '0' + hexCode[3];
+
+
+
+suid = hexCode[0];
+suid += '-' + hexCode[1];
+suid += '-' + hexCode[2];
+suid += '-' + hexCode[3];
 
 print suid;
 exit(0);