diff --git a/examples/nfc-emulate-ndef.c b/examples/nfc-emulate-ndef.c
index 54ba9b1..96b545a 100644
--- a/examples/nfc-emulate-ndef.c
+++ b/examples/nfc-emulate-ndef.c
@@ -36,6 +36,8 @@
 
 #include <nfc/nfc-messages.h>
 #include "nfc-utils.h"
+// FIXME doesn't use a pn53x specific function, use libnfc's API
+#include "chips/pn53x.h"
 
 #define MAX_FRAME_LEN 264
 
@@ -112,18 +114,36 @@ main (int argc, char *argv[])
     print_hex (abtRx, szRxLen);
   }
 
+//Receiving data: e0  40
+//= RATS, FSD=48
+//Actually PN532 already sent back the ATS so nothing to send now
   transmit_bytes((const byte_t*)"\x0a\x00\x6a\x87",4);
+//Receiving data: 0b  00      00  a4  04  00  06  e1  03  e1  03  e1  03
+//= App Select by name "e103e103e103"
   transmit_bytes((const byte_t*)"\x0b\x00\x6a\x87",4);
+//Receiving data: 0a  00      00  a4  04  00  07  d2  76  00  00  85  01  00
+//= App Select by name "D2760000850100"
   transmit_bytes((const byte_t*)"\x0a\x00\x90\x00",4);
+//Receiving data: 0b  00      00  a4  00  00  02  e1  03
+//= Select CC
   transmit_bytes((const byte_t*)"\x0b\x00\x90\x00",4);
+//Receiving data: 0a  00      00  b0  00  00  0f
+//= ReadBinary CC
+//We send CC + OK
   transmit_bytes((const byte_t*)"\x0a\x00\x00\x0f\x10\x00\x3b\x00\x34\x04\x06\xe1\x04\x0e\xe0\x00\x00\x90\x00",19);
+//Receiving data: 0b  00      00  a4  00  00  02  e1  04
+//= Select NDEF
   transmit_bytes((const byte_t*)"\x0b\x00\x90\x00",4);
+//Receiving data: 0a  00      00  b0  00  00  02
+//=  Read first 2 NDEF bytes
+//Sent NDEF Length=0x21
   transmit_bytes((const byte_t*)"\x0a\x00\x00\x21\x90\x00",6);
+//Receiving data: 0b  00      00  b0  00  02  21
   transmit_bytes((const byte_t*)"\x0b\x00\xd1\x02\x1c\x53\x70\x91\x01\x09\x54\x02\x65\x6e\x4c\x69\x62\x6e\x66\x63\x51\x01\x0b\x55\x03\x6c\x69\x62\x6e\x66\x63\x2e\x6f\x72\x67\x90\x00",37);
-  // At this point we should have received a S(DESELECT)
-  // We don't have to reply ourselves because when using
-  // ISO/IEC14443-4 PICC mode, S(DESELECT) response is automatic
-  //transmit_bytes((const byte_t*)"\xca\x00",2);
+//Receiving data: ca  00
+//= S(DESELECT)
+// We don't have to reply ourselves because when using
+// ISO/IEC14443-4 PICC mode, S(DESELECT) response is automatic
 
   nfc_disconnect(pnd);
   exit (EXIT_SUCCESS);