diff --git a/include/cyclic.h b/include/cyclic.h
index 8b16046c..0fbbc6ca 100644
--- a/include/cyclic.h
+++ b/include/cyclic.h
@@ -12,6 +12,9 @@
 #include "sdcard.h"
 #include "macsniff.h"
 #include "reset.h"
+#ifdef LIBPAX
+#include <libpax_api.h>
+#endif
 
 extern Ticker cyclicTimer;
 
diff --git a/include/globals.h b/include/globals.h
index 1930a3f5..272d8b57 100644
--- a/include/globals.h
+++ b/include/globals.h
@@ -141,6 +141,9 @@ extern uint8_t volatile channel;               // wifi channel rotation counter
 extern uint8_t volatile rf_load;               // RF traffic indicator
 extern uint8_t batt_level;                     // display value
 extern uint16_t volatile macs_wifi, macs_ble;  // display values
+#ifdef LIBPAX
+extern uint16_t volatile libpax_macs_ble, libpax_macs_wifi; // libpax values
+#endif
 extern bool volatile TimePulseTick; // 1sec pps flag set by GPS or RTC
 extern timesource_t timeSource;
 extern hw_timer_t *displayIRQ, *matrixDisplayIRQ, *ppsIRQ;
diff --git a/include/senddata.h b/include/senddata.h
index c99b1f5a..98cd4c5d 100644
--- a/include/senddata.h
+++ b/include/senddata.h
@@ -9,10 +9,18 @@
 #include "display.h"
 #include "sdcard.h"
 
+
 #if (COUNT_ENS)
 #include "corona.h"
 #endif
 
+#if (LIBPAX)
+#include <libpax_api.h>
+
+extern struct count_payload_t count_from_libpax;
+#endif
+
+
 extern Ticker sendTimer;
 
 void SendPayload(uint8_t port);
diff --git a/platformio_orig.ini b/platformio_orig.ini
index 3c55b8bb..86e1f081 100644
--- a/platformio_orig.ini
+++ b/platformio_orig.ini
@@ -89,6 +89,7 @@ lib_deps_basic =
     lewisxhe/AXP202X_Library @ ^1.1.3
     geeksville/esp32-micro-sdcard @ ^0.1.1
     256dpi/MQTT @ ^2.4.7
+    https://github.com/dbSuS/libpax
 lib_deps_all =
     ${common.lib_deps_basic}
     ${common.lib_deps_lora}
@@ -105,6 +106,9 @@ build_flags_basic =
     '-DPROGVERSION="${common.release_version}"'
     '-Wno-unknown-pragmas'
     '-Wno-unused-variable'
+    '-D LIBPAX_WIFI'
+    '-D LIBPAX_BLE'
+    '-D LIBPAX_ARDUINO'
 build_flags_sensors =
     -Llib/Bosch-BSEC/src/esp32/
     -lalgobsec
diff --git a/src/blecsan.cpp b/src/blecsan.cpp
index 9b29d7a9..071a8007 100644
--- a/src/blecsan.cpp
+++ b/src/blecsan.cpp
@@ -1,3 +1,4 @@
+#ifndef LIBPAX
 // some code snippets taken from
 // https://github.com/nkolban/esp32-snippets/tree/master/BLE/scanner
 
@@ -300,3 +301,4 @@ void stop_BLEscan(void) {
   ESP_LOGI(TAG, "Bluetooth scanner stopped");
 #endif // BLECOUNTER
 } // stop_BLEscan
+#endif
\ No newline at end of file
diff --git a/src/cyclic.cpp b/src/cyclic.cpp
index db0e9d2f..61185f0f 100644
--- a/src/cyclic.cpp
+++ b/src/cyclic.cpp
@@ -134,11 +134,14 @@ uint32_t getFreeRAM() {
 }
 
 void reset_counters() {
+
 #if ((WIFICOUNTER) || (BLECOUNTER))
+#ifndef LIBPAX   
   macs.clear(); // clear all macs container
   macs_wifi = 0;
   macs_ble = 0;
-  renew_salt(); // get new salt
+  renew_salt(); // get new salt 
+#endif
 #ifdef HAS_DISPLAY
   dp_plotCurve(0, true);
 #endif
diff --git a/src/display.cpp b/src/display.cpp
index 65331bf6..711bdc95 100644
--- a/src/display.cpp
+++ b/src/display.cpp
@@ -262,7 +262,11 @@ void dp_drawPage(time_t t, bool nextpage) {
 
 #if ((WIFICOUNTER) && (BLECOUNTER))
     if (cfg.wifiscan)
+#ifndef LIBPAX
       dp_printf("WIFI:%-5d", macs_wifi);
+#else
+      dp_printf("WIFI:%-5d", libpax_macs_wifi);
+#endif
     else
       dp_printf("WIFI:off");
     if (cfg.blescan)
@@ -271,17 +275,29 @@ void dp_drawPage(time_t t, bool nextpage) {
         dp_printf(" CWA:%-5d", cwa_report());
       else
 #endif
-        dp_printf("BLTH:%-5d", macs_ble);
+#ifndef LIBPAX
+      dp_printf("BLTH:%-5d", macs_ble);
+#else
+      dp_printf("BLTH:%-5d", libpax_macs_ble);
+#endif
     else
       dp_printf(" BLTH:off");
 #elif ((WIFICOUNTER) && (!BLECOUNTER))
     if (cfg.wifiscan)
+#ifndef LIBPAX
       dp_printf("WIFI:%-5d", macs_wifi);
+#else
+      dp_printf("WIFI:%-5d", libpax_macs_wifi);
+#endif
     else
       dp_printf("WIFI:off");
 #elif ((!WIFICOUNTER) && (BLECOUNTER))
     if (cfg.blescan)
+#ifndef LIBPAX
       dp_printf("BLTH:%-5d", macs_ble);
+#else
+      dp_printf("BLTH:%-5d", libpax_macs_ble);
+#endif
 #if (COUNT_ENS)
     if (cfg.enscount)
       dp_printf("(CWA:%d)", cwa_report());
diff --git a/src/main.cpp b/src/main.cpp
index 1decf901..c03e136f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -90,9 +90,15 @@ triggers pps 1 sec impulse
 configData_t cfg; // struct holds current device configuration
 char lmic_event_msg[LMIC_EVENTMSG_LEN]; // display buffer for LMIC event message
 uint8_t batt_level = 0;                 // display value
+#ifndef LIBPAX
 uint8_t volatile channel = WIFI_CHANNEL_MIN;   // channel rotation counter
+#endif
 uint8_t volatile rf_load = 0;                  // RF traffic indicator
+#ifndef LIBPAX
 uint16_t volatile macs_wifi = 0, macs_ble = 0; // globals for display
+#else
+uint16_t volatile libpax_macs_ble, libpax_macs_wifi;
+#endif
 
 hw_timer_t *ppsIRQ = NULL, *displayIRQ = NULL, *matrixDisplayIRQ = NULL;
 
@@ -113,6 +119,17 @@ TimeChangeRule myDST = DAYLIGHT_TIME;
 TimeChangeRule mySTD = STANDARD_TIME;
 Timezone myTZ(myDST, mySTD);
 
+// libpax payload
+#ifdef LIBPAX
+struct count_payload_t count_from_libpax;
+
+void process_count(void) {
+  printf("pax: %d; %d; %d;\n", count_from_libpax.pax, count_from_libpax.wifi_count, count_from_libpax.ble_count);
+  libpax_macs_ble = count_from_libpax.ble_count;
+  libpax_macs_wifi = count_from_libpax.wifi_count;
+}
+#endif
+
 // local Tag for logging
 static const char TAG[] = __FILE__;
 
@@ -298,9 +315,39 @@ void setup() {
   if (RTC_runmode == RUNMODE_MAINTENANCE)
     start_boot_menu();
 
+#ifndef LIBPAX
   // start mac processing task
   ESP_LOGI(TAG, "Starting MAC processor...");
   macQueueInit();
+#else
+ESP_LOGI(TAG, "Starting libpax...");
+#if (defined WIFICOUNTER || defined BLECOUNTER) 
+  struct libpax_config_t configuration;
+  libpax_default_config(&configuration);
+  ESP_LOGI(TAG, "BLESCAN: %d", cfg.blescan);
+  ESP_LOGI(TAG, "WIFISCAN: %d", cfg.wifiscan);
+  if(!(cfg.blescan && cfg.wifiscan)) {
+    configuration.wificounter = cfg.wifiscan;
+    configuration.blecounter = cfg.blescan;
+
+    configuration.wifi_channel_map = WIFI_CHANNEL_ALL;
+    configuration.wifi_channel_switch_interval = cfg.wifichancycle;
+    configuration.wifi_rssi_threshold = cfg.rssilimit;
+
+    configuration.blescantime = cfg.blescantime;
+
+    int config_update = libpax_update_config(&configuration);
+    if(config_update != 0) {
+      ESP_LOGE(TAG, "Error in libpax configuration.");
+    } else {
+      libpax_counter_init(process_count, &count_from_libpax, 60*1000, 1); 
+      libpax_counter_start();
+    }
+  } else {
+    ESP_LOGE(TAG, "Error in libpax configuration: Wifi and BLE are not supported at the same time!");
+  }
+#endif
+#endif
 
   // start rcommand processing task
   ESP_LOGI(TAG, "Starting rcommand interpreter...");
@@ -310,14 +357,18 @@ void setup() {
 // or remove bluetooth stack from RAM, if option bluetooth is not compiled
 #if (BLECOUNTER)
   strcat_P(features, " BLE");
+#ifndef LIBPAX
   if (cfg.blescan) {
     ESP_LOGI(TAG, "Starting Bluetooth...");
     start_BLEscan();
   } else
     btStop();
+#endif
 #else
   // remove bluetooth stack to gain more free memory
+#ifndef LIBPAX
   btStop();
+#endif
   esp_bt_mem_release(ESP_BT_MODE_BTDM);
   esp_coex_preference_set(
       ESP_COEX_PREFER_WIFI); // configure Wifi/BT coexist lib
@@ -427,6 +478,7 @@ void setup() {
 
 #if (WIFICOUNTER)
   strcat_P(features, " WIFI");
+#ifndef LIBPAX
   // install wifi driver in RAM and start channel hopping
   wifi_sniffer_init();
   // start wifi sniffing, if enabled
@@ -435,6 +487,8 @@ void setup() {
     switch_wifi_sniffer(1);
   } else
     switch_wifi_sniffer(0);
+#endif
+
 #else
   // remove wifi driver from RAM, if option wifi not compiled
   esp_wifi_deinit();
@@ -443,7 +497,9 @@ void setup() {
   // initialize salt value using esp_random() called by random() in
   // arduino-esp32 core. Note: do this *after* wifi has started, since
   // function gets it's seed from RF noise
+#ifndef LIBPAX
   reset_counters();
+#endif
 
   // start state machine
   ESP_LOGI(TAG, "Starting Interrupt Handler...");
diff --git a/src/paxcounter_orig.conf b/src/paxcounter_orig.conf
index 3440d8fc..83f8b376 100644
--- a/src/paxcounter_orig.conf
+++ b/src/paxcounter_orig.conf
@@ -20,7 +20,7 @@
 
 // MAC sniffing parameters
 #define MACFILTER                       1       // set to 0 if you want to scan all devices, 1 to scan only devices with random MACs (aka smartphones) [default = 1]
-#define BLECOUNTER                      1       // set to 0 if you do not want to install the BLE sniffer
+#define BLECOUNTER                      0       // set to 0 if you do not want to install the BLE sniffer
 #define WIFICOUNTER                     1       // set to 0 if you do not want to install the WIFI sniffer
 #define MAC_QUEUE_SIZE                  50      // size of MAC processing buffer (number of MACs) [default = 50]
 
@@ -29,6 +29,9 @@
 #define BLESCANWINDOW                   80      // [milliseconds] scan window, see below, 3 .. 10240, default 80ms
 #define BLESCANINTERVAL                 80      // [illiseconds] scan interval, see below, 3 .. 10240, default 80ms = 100% duty cycle
 
+// Use libpax instead of default counting algorithms
+#define LIBPAX                          1    
+
 // Corona Exposure Notification Service(ENS) counter
 #define COUNT_ENS                       1       // count found number of devices which advertise Exposure Notification Service
                                                 // set to 1 if you want to enable this function [default=0]
diff --git a/src/rcommand.cpp b/src/rcommand.cpp
index e4b009b3..353d25c0 100644
--- a/src/rcommand.cpp
+++ b/src/rcommand.cpp
@@ -72,6 +72,7 @@ void set_sleepcycle(uint8_t val[]) {
 
 void set_wifichancycle(uint8_t val[]) {
   cfg.wifichancycle = val[0];
+  #ifndef LIBAPX
   // update Wifi channel rotation timer period
   if (cfg.wifichancycle > 0) {
     if (xTimerIsTimerActive(WifiChanTimer) == pdFALSE)
@@ -88,10 +89,14 @@ void set_wifichancycle(uint8_t val[]) {
     channel = WIFI_CHANNEL_MIN;
     ESP_LOGI(TAG, "Remote command: set Wifi channel hopping to off");
   }
+  #else
+  // TODO update libpax configuration
+  #endif
 }
 
 void set_blescantime(uint8_t val[]) {
   cfg.blescantime = val[0];
+  #ifndef LIBPAX
   ESP_LOGI(TAG, "Remote command: set BLE scan time to %.1f seconds",
            cfg.blescantime / float(100));
   // stop & restart BLE scan task to apply new parameter
@@ -99,6 +104,9 @@ void set_blescantime(uint8_t val[]) {
     stop_BLEscan();
     start_BLEscan();
   }
+  #else
+    // TODO update libpax configuration
+  #endif
 }
 
 void set_countmode(uint8_t val[]) {
@@ -240,20 +248,28 @@ void set_loraadr(uint8_t val[]) {
 
 void set_blescan(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: set BLE scanner to %s", val[0] ? "on" : "off");
+  #ifndef LIBPAX
   macs_ble = 0; // clear BLE counter
   cfg.blescan = val[0] ? 1 : 0;
   if (cfg.blescan)
     start_BLEscan();
   else
     stop_BLEscan();
+  #else
+  // TODO update libpax configuration
+  #endif 
 }
 
 void set_wifiscan(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: set WIFI scanner to %s",
            val[0] ? "on" : "off");
+  #ifndef LIBPAX
   macs_wifi = 0; // clear WIFI counter
   cfg.wifiscan = val[0] ? 1 : 0;
   switch_wifi_sniffer(cfg.wifiscan);
+  #else
+  // TODO update libpax configuration
+  #endif 
 }
 
 void set_wifiant(uint8_t val[]) {
diff --git a/src/reset.cpp b/src/reset.cpp
index 350e33cb..c15b6c7b 100644
--- a/src/reset.cpp
+++ b/src/reset.cpp
@@ -107,6 +107,7 @@ void enter_deepsleep(const uint64_t wakeup_sec, gpio_num_t wakeup_gpio) {
   sendTimer.detach();
 
   // switch off radio and other power consuming hardware
+#ifndef LIBPAX
 #if (WIFICOUNTER)
   switch_wifi_sniffer(0);
 #endif
@@ -114,6 +115,7 @@ void enter_deepsleep(const uint64_t wakeup_sec, gpio_num_t wakeup_gpio) {
   stop_BLEscan();
   btStop();
 #endif
+#endif
 #if (HAS_SDS011)
   sds011_sleep(void);
 #endif
diff --git a/src/senddata.cpp b/src/senddata.cpp
index f5738552..28ccd28e 100644
--- a/src/senddata.cpp
+++ b/src/senddata.cpp
@@ -57,7 +57,11 @@ void SendPayload(uint8_t port) {
 // write data to sdcard, if present
 #if (HAS_SDCARD)
   if (port == COUNTERPORT) {
+#ifndef LIBPAX
     sdcardWriteData(macs_wifi, macs_ble
+#else
+    sdcardWriteData(libpax_macs_wifi, libpax_macs_ble
+#endif
 #if (COUNT_ENS)
                     ,
                     cwa_report()
@@ -87,9 +91,20 @@ void sendData() {
     case COUNT_DATA:
       payload.reset();
 #if !(PAYLOAD_OPENSENSEBOX)
+#ifndef LIBPAX     
       payload.addCount(macs_wifi, MAC_SNIFF_WIFI);
-      if (cfg.blescan)
+#else
+      ESP_LOGI(TAG, "Sending libpax wifi count: %d", libpax_macs_wifi);
+      payload.addCount(libpax_macs_wifi, MAC_SNIFF_WIFI);
+#endif
+      if (cfg.blescan) {
+#ifndef LIBPAX
         payload.addCount(macs_ble, MAC_SNIFF_BLE);
+#else    
+        ESP_LOGI(TAG, "Sending libpax ble count: %d", libpax_macs_ble);
+        payload.addCount(libpax_macs_ble, MAC_SNIFF_BLE);
+#endif
+      }
 #endif
 #if (HAS_GPS)
       if (GPSPORT == COUNTERPORT) {
@@ -102,9 +117,19 @@ void sendData() {
       }
 #endif
 #if (PAYLOAD_OPENSENSEBOX)
+#ifndef LIBPAX     
       payload.addCount(macs_wifi, MAC_SNIFF_WIFI);
-      if (cfg.blescan)
+#else
+      ESP_LOGI(TAG, "Sending libpax wifi count: %d", libpax_macs_wifi);
+      payload.addCount(libpax_macs_wifi, MAC_SNIFF_WIFI);
+#endif
+      if (cfg.blescan) {
+#ifndef LIBPAX
         payload.addCount(macs_ble, MAC_SNIFF_BLE);
+#else    
+        ESP_LOGI(TAG, "Sending libpax ble count: %d", libpax_macs_ble);
+        payload.addCount(libpax_macs_ble, MAC_SNIFF_BLE);
+#endif
 #endif
 #if (HAS_SDS011)
       sds011_store(&sds_status);
diff --git a/src/wifiscan.cpp b/src/wifiscan.cpp
index a4399a05..2632bae4 100644
--- a/src/wifiscan.cpp
+++ b/src/wifiscan.cpp
@@ -1,3 +1,4 @@
+#ifndef LIBPAX
 // Basic Config
 #include "globals.h"
 #include "wifiscan.h"
@@ -102,4 +103,5 @@ void switch_wifi_sniffer(uint8_t state) {
     esp_wifi_set_promiscuous(false);
     esp_wifi_stop();
   }
-}
\ No newline at end of file
+}
+#endif
\ No newline at end of file