diff --git a/owlps-aggregator/owlps-aggregator.h b/owlps-aggregator/owlps-aggregator.h
index 4f29aac..edcc169 100644
--- a/owlps-aggregator/owlps-aggregator.h
+++ b/owlps-aggregator/owlps-aggregator.h
@@ -35,6 +35,8 @@
 /* Linked list storing data of each request */
 typedef struct _request_info_list
 {
+  // Number of the current packet:
+  uint16_t packet_id ;
   // MAC address of the transmitter AP (in bytes):
   uint8_t ap_mac_addr_bytes[ETHER_ADDR_LEN] ;
   // Signal strength received by the AP from the mobile:
@@ -48,6 +50,9 @@ typedef struct _request_list
 {
   uint8_t type ;
 
+  // Number of packets sent by the mobile for this request:
+  uint16_t nb_packets ;
+
   /* Request identifier */
   // Mobile MAC address (in bytes):
   uint8_t mobile_mac_addr_bytes[ETHER_ADDR_LEN] ;
diff --git a/owlps-aggregator/owlps-aggregatord.c b/owlps-aggregator/owlps-aggregatord.c
index 9e1ed45..5044c09 100644
--- a/owlps-aggregator/owlps-aggregatord.c
+++ b/owlps-aggregator/owlps-aggregatord.c
@@ -501,6 +501,8 @@ int read_loop(int sockfd)
       request.x_position = owl_ntohf(request.x_position) ;
       request.y_position = owl_ntohf(request.y_position) ;
       request.z_position = owl_ntohf(request.z_position) ;
+      request.packet_id = ntohs(request.packet_id) ;
+      request.nb_packets = ntohs(request.nb_packets) ;
 
       if (VERBOSE_REQUESTS)
         {
@@ -529,13 +531,14 @@ int read_loop(int sockfd)
                   "\tAP MAC: %s\n"
                   "\tMobile MAC: %s\n"
                   "\tMobile IP: %s\n"
-                  "\tSequence number (request timestamp): %s\n"
+                  "\tRequest timestamp: %s\n"
                   "\tRequest arrival time on the AP: %s\n"
                   "\tSignal: %d dBm\n"
                   "\tPosition X: %f\n"
                   "\tPosition Y: %f\n"
                   "\tPosition Z: %f\n"
                   "\tDirection: %"PRIu8"\n"
+                  "\tPacket number: %"PRIu16"/%"PRIu16"\n"
                   ,
                   request.type,
                   ap_mac_addr_str,
@@ -547,7 +550,9 @@ int read_loop(int sockfd)
                   request.x_position,
                   request.y_position,
                   request.z_position,
-                  request.direction
+                  request.direction,
+                  request.packet_id,
+                  request.nb_packets
                   ) ;
         }
       else if (VERBOSE_CHATTERBOX)
@@ -643,8 +648,10 @@ void* monitor_requests(void *NULL_value)
                                             mac_str) ;
                   fprintf(fd, "%s;", mac_str) ;
 
-                  // Print request type to the output file
-                  fprintf(fd, "%"PRIu8";", request_ptr->type) ;
+                  // Print request type & number of packets to the
+                  // output file
+                  fprintf(fd, "%"PRIu8";%"PRIu16";",
+                          request_ptr->type, request_ptr->nb_packets) ;
 
                   // Print request mobile timestamp to the output file
                   owl_timestamp_to_string(&request_ptr->request_time,
@@ -660,6 +667,7 @@ void* monitor_requests(void *NULL_value)
 
                   // Initialise owl_request fields:
                   request.type = request_ptr->type ;
+                  request.nb_packets = htons(request_ptr->nb_packets) ;
                   memcpy(request.mobile_mac_addr_bytes,
                          request_ptr->mobile_mac_addr_bytes,
                          ETHER_ADDR_LEN) ;
@@ -690,6 +698,8 @@ void* monitor_requests(void *NULL_value)
                   while (request_info_ptr != NULL)
                     {
                       // Send AP info to the localisation server
+                      info.packet_id =
+                        htons(request_info_ptr->packet_id) ;
                       memcpy(info.ap_mac_addr_bytes,
                              request_info_ptr->ap_mac_addr_bytes,
                              ETHER_ADDR_LEN) ;
@@ -701,8 +711,9 @@ void* monitor_requests(void *NULL_value)
                       owl_mac_bytes_to_string_r(request_info_ptr->
                                                 ap_mac_addr_bytes,
                                                 mac_str) ;
-                      fprintf(fd, ";%s;%d",
+                      fprintf(fd, ";%s;%"PRIu16";%d",
                               mac_str,
+                              request_info_ptr->packet_id,
                               request_info_ptr->ss_dbm - 256) ;
 
                       // Delete request
@@ -772,6 +783,7 @@ void got_request(owl_captured_request request)
 
   /* Create a new request */
   tmp_info = malloc(sizeof(request_info_list)) ;
+  tmp_info->packet_id = request.packet_id ;
   memcpy(tmp_info->ap_mac_addr_bytes, request.ap_mac_addr_bytes,
          ETHER_ADDR_LEN) ;
   tmp_info->ss_dbm = request.ss_dbm ;
@@ -788,6 +800,7 @@ void got_request(owl_captured_request request)
                 owl_mac_bytes_to_string(request.ap_mac_addr_bytes)) ;
       tmp_request = malloc(sizeof(request_list)) ; // create it.
       tmp_request->type = request.type ;
+      tmp_request->nb_packets = request.nb_packets ;
       memcpy(tmp_request->mobile_mac_addr_bytes,
              request.mobile_mac_addr_bytes, ETHER_ADDR_LEN) ;
       // Explicit packet:
@@ -848,6 +861,7 @@ void got_request(owl_captured_request request)
                     owl_mac_bytes_to_string(request.ap_mac_addr_bytes)) ;
           tmp_request = malloc(sizeof(request_list)) ; // create it
           tmp_request->type = request.type ;
+          tmp_request->nb_packets = request.nb_packets ;
           memcpy(tmp_request->mobile_mac_addr_bytes,
                  request.mobile_mac_addr_bytes, ETHER_ADDR_LEN) ;
           // Explicit packet: