diff --git a/src/logger.c b/src/logger.c
index e34ab5f..73c85ca 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -13,6 +13,7 @@
 // Global:
 char *__client;
 char *__ip;
+char *__key;
 int __port;
 char __logdir[STATIC_LEN];
 char __regpower[STATIC_LEN];
@@ -38,6 +39,7 @@ typedef struct record {
 
 typedef struct queue {
   int length;
+  int interval;
   record records[RECORD_MAX];
 } queue;
 
@@ -45,8 +47,8 @@ queue queues[RECORD_QUEUES];
 
 int main (int argc, char *argv [])
 {
-  if(argc != 6){
-    printf("Usage: %s <abslogdir> <client> <loginterval> <ip> <port>",argv[0]);
+  if(argc != 7){
+    printf("Usage: %s <abslogdir> <client> <loginterval> <ip> <port> <key>",argv[0]);
     exit(1);
   }
 
@@ -55,6 +57,7 @@ int main (int argc, char *argv [])
   __loginterval=atoi(argv[3]);
   __ip=argv[4];
   __port=atoi(argv[5]);
+  __key=argv[6];
   // __logdir:
   strcat(__logdir,argv[1]);
   strcat(__logdir,"/");
@@ -107,6 +110,7 @@ int main (int argc, char *argv [])
     interval=INTERVAL(__loginterval);
     // Log current interval
     queue_id=queue_id>=RECORD_QUEUES ? 0 : queue_id+1;
+    queues[queue_id].interval=interval;
     int record=0;
     while((TIMESTAMP()-interval)<__loginterval){
       if(__stop)
@@ -142,8 +146,29 @@ int main (int argc, char *argv [])
 
 
 void publish(int queue_id){
-  for(int i=0;i<queues[queue_id].length;i++){
-    printf("%d,%ld,%d\n",queues[queue_id].records[i].secs,queues[queue_id].records[i].nsecs,queues[queue_id].records[i].power);
-  fflush(stdout);
-  }
+    // Build message header:
+    char buffer[ZMQ_MSG_SIZE];
+    sprintf(buffer,"%s\n%s\n%s\n%ld\n",ZMQ_TOKEN,__key,__client,queues[queue_id].interval);
+    int msglen=strlen(buffer);
+
+    // Put every lines in the buffer and send it
+    char line[STATIC_LEN];
+    for(int record=0;record<queues[queue_id].length;record++){
+      *line='\0';
+      sprintf(line,"%d,%ld,%d",queues[queue_id].records[record].secs,queues[queue_id].records[record].nsecs,queues[queue_id].records[record].power);
+      int linelength=strlen(line);
+      if((linelength+msglen) <ZMQ_MSG_SIZE){
+          strcat(buffer,line);
+          msglen+=linelength;
+      } else {
+          // It buffer is full, we send the message and create another one
+          zmq_send (__zmq_publisher, buffer, msglen, 0);
+          // Build new message header:
+          sprintf(buffer,"%s\n%s\n%s\n%ld\n",ZMQ_TOKEN,__key,__client,queues[queue_id].interval);
+          strcat(buffer,line);
+          msglen=strlen(buffer);
+      }
+    }
+    // Finally send the last message (or the only one)
+    zmq_send (__zmq_publisher, buffer, msglen, 0);
 }
\ No newline at end of file