diff --git a/.gitignore b/.gitignore
index 89cc49c..1fcbe2c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@
 .vscode/c_cpp_properties.json
 .vscode/launch.json
 .vscode/ipch
+
+secrets.csv
+nvs_secrets.bin
\ No newline at end of file
diff --git a/flash_secrets.sh b/flash_secrets.sh
new file mode 100755
index 0000000..e896f7e
--- /dev/null
+++ b/flash_secrets.sh
@@ -0,0 +1,4 @@
+# Si nécessaire, activer le venv de platformio : source ~/.platformio/penv/bin/activate
+
+pio pkg exec -p "tool-esptoolpy" -- python -m esp_idf_nvs_partition_gen generate secrets.csv nvs_secrets.bin 0x6000
+pio pkg exec -p "tool-esptoolpy" -- esptool.py write_flash 0x9000 nvs_secrets.bin
\ No newline at end of file
diff --git a/lib/Transmitter/LoRaTransmitter.cpp b/lib/Transmitter/LoRaTransmitter.cpp
index bf1870d..5bb662b 100644
--- a/lib/Transmitter/LoRaTransmitter.cpp
+++ b/lib/Transmitter/LoRaTransmitter.cpp
@@ -2,19 +2,19 @@
 
 RTC_DATA_ATTR uint8_t LWsession[RADIOLIB_LORAWAN_SESSION_BUF_SIZE];
 
-LoRaTransmitter::LoRaTransmitter(
-    uint64_t joinEUI,
-    uint64_t devEUI,
-    uint8_t* nwkKey,
-    uint8_t* appKey
-)
-    : _joinEUI(joinEUI),
-      _devEUI(devEUI),
-      _radio(new Module(LORA_NSS, LORA_DIO0, LORA_RST, LORA_DIO1)),
+LoRaTransmitter::LoRaTransmitter()
+    : _radio(new Module(LORA_NSS, LORA_DIO0, LORA_RST, LORA_DIO1)),
       _node(&_radio, &EU868)
 {
-    memcpy(_nwkKey, nwkKey, 16);
-    memcpy(_appKey, appKey, 16);
+    _prefs.begin("lorawan", true);
+    
+    _joinEUI = _prefs.getULong64("join_eui", 0);
+    _devEUI  = _prefs.getULong64("dev_eui", 0);
+    _prefs.getBytes("nwk_key", _nwkKey, 16);
+    _prefs.getBytes("app_key", _appKey, 16);
+
+    _prefs.end();
+
     memset(_noncesBuffer, 0, RADIOLIB_LORAWAN_NONCES_BUF_SIZE);
 }
 
diff --git a/lib/Transmitter/LoRaTransmitter.h b/lib/Transmitter/LoRaTransmitter.h
index 0dbd777..1c5fbbf 100644
--- a/lib/Transmitter/LoRaTransmitter.h
+++ b/lib/Transmitter/LoRaTransmitter.h
@@ -15,12 +15,7 @@
 
 class LoRaTransmitter : public ITransmitter {
 public:
-    LoRaTransmitter(
-        uint64_t joinEUI,
-        uint64_t devEUI,
-        uint8_t* nwkKey,
-        uint8_t* appKey
-    );
+    LoRaTransmitter();
 
     TransmitError init()                              override;
     TransmitError join()                              override;
diff --git a/secrets.csv.example b/secrets.csv.example
new file mode 100644
index 0000000..971fc5c
--- /dev/null
+++ b/secrets.csv.example
@@ -0,0 +1,6 @@
+key,type,encoding,value
+lorawan,namespace,,
+join_eui,data,hex2bin,0011223344556677
+dev_eui,data,hex2bin,0011223344556677
+app_key,data,hex2bin,AABBCCDDEEFF00112233445566778899
+nwk_key,data,hex2bin,AABBCCDDEEFF00112233445566778899
\ No newline at end of file
diff --git a/src/config.h b/src/config.h
deleted file mode 100644
index f2b60a7..0000000
--- a/src/config.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#pragma once
-
-#define MAX_RESTART 1
-#define MAX_FATAL_RESTART 3
-
-uint64_t joinEUI = 0x911b5c62b4dc2079;
-uint64_t devEUI = 0x0586fe41112d83d9;
-uint8_t appKey[] = {
-    0x81, 0x24, 0xbe, 0x86, 0x59, 0x06, 0xa4, 0x4f,
-    0xe7, 0x39, 0xd6, 0x0f, 0xd6, 0x88, 0x91, 0xcc};
-uint8_t nwkKey[] = {
-    0xb8, 0x30, 0x20, 0xf2, 0x52, 0x3b, 0xd2, 0xb0,
-    0x1d, 0x12, 0xe1, 0xb9, 0xe7, 0xe1, 0xb0, 0xde};
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 5870002..7120d3c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,15 +4,13 @@
 #include <GazDisplay.h>
 #include "config.h"
 
+#define MAX_RESTART 1
+#define MAX_FATAL_RESTART 3
+
 RTC_DATA_ATTR uint8_t fatalRestartCount = 0;
 RTC_DATA_ATTR uint8_t restartCount = 0;
 
-ITransmitter* transmitter = new LoRaTransmitter(
-    joinEUI,
-    devEUI,
-    nwkKey,
-    appKey
-);
+ITransmitter* transmitter;
 
 void fatalError(const char* msg){
     Serial.printf("[FATAL] %s\n", msg);
@@ -57,6 +55,8 @@ void setup() {
     Serial.begin(115200);
     delay(2000);
 
+    transmitter = new LoRaTransmitter();
+    
     if (displayInit() != DisplayError::OK){
         nonCriticalError("Initialisation du périphérique d'affichage échouée");
     }