diff --git a/README.md b/README.md
index 5c1d6a7..c1580f6 100644
--- a/README.md
+++ b/README.md
@@ -27,26 +27,45 @@ The NanoPI Neo2 is used for controlling the GSM modules. Any other device which
 The code is written in python and simply opens a serial connection with any modem to check for incoming messages. When messages are found, the agent will send a put request with the message's sender and text to the web fronted which can be either hosted on the same machine or elsewhere
 
 ## Config
-Numbers needs to be specified because most of the times they aren't written on the sim card. Sim cards may be hotswapped, but if this config isn't updated the wrong receiving number will be displayed on the frontend.
+Numbers needs to be specified because most of the times they aren't written on the sim card. Sim cards may be hotswapped, but if this config isn't updated the wrong receiving number will be displayed on the frontend. `imei` is optional and if specified it will cause the agent to run ```AT+EMGR=1,7,"imei"``` on the target modem.
 
-*agent/config/gsm.ini*
+*agent/config/gsm.json*
 ```
-/dev/ttyUSB0 +393409821322
-/dev/ttyUSB1 +443312123452
-/dev/ttyUSB2 +913446435634
-/dev/ttyUSB3 +12456345344
+[
+   {
+      "dev":"/dev/ttyUSB0",
+      "msisdn":"+393409821322",
+      "imei":"990000862471854"
+   },
+   {
+      "dev":"/dev/ttyUSB1",
+      "msisdn":"+443312123452"
+   },
+   {
+      "dev":"/dev/ttyUSB2",
+      "msisdn":"+913446435634"
+   },
+   {
+      "dev":"/dev/ttyUSB3",
+      "msisdn":"+12456345344"
+   }
+]
 ```
 
 
 Hostname and secret key used for updating the frontend. May as well be http://127.0.0.1
 
-*agent/config/api.ini*
+*agent/config/api.json*
 ```
-https://sms.lsd.cat
-supersecretegakey1234123
+{
+   "url":"https://sms.lsd.cat",
+   "key":"supersecretegakey1234123"
+}
 ```
 
-*frontend/config/api.ini*
+*frontend/config/api.json*
 ```
-supersecretegakey1234123
+{
+   "key":"supersecretegakey1234123"
+}
 ```
\ No newline at end of file
diff --git a/agent/config/api.ini b/agent/config/api.ini
deleted file mode 100644
index 86e8b37..0000000
--- a/agent/config/api.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-https://sms.lsd.cat
-supersecretegakey1234123
diff --git a/agent/config/api.json b/agent/config/api.json
new file mode 100644
index 0000000..8652093
--- /dev/null
+++ b/agent/config/api.json
@@ -0,0 +1,4 @@
+{
+   "url":"https://sms.lsd.cat",
+   "key":"supersecretegakey1234123"
+}
\ No newline at end of file
diff --git a/agent/config/gsm.json b/agent/config/gsm.json
new file mode 100644
index 0000000..bc0f418
--- /dev/null
+++ b/agent/config/gsm.json
@@ -0,0 +1,19 @@
+[
+   {
+      "dev":"/dev/ttyUSB0",
+      "msisdn":"+393409821322",
+      "imei":"990000862471854"
+   },
+   {
+      "dev":"/dev/ttyUSB1",
+      "msisdn":"+443312123452"
+   },
+   {
+      "dev":"/dev/ttyUSB2",
+      "msisdn":"+913446435634"
+   },
+   {
+      "dev":"/dev/ttyUSB3",
+      "msisdn":"+12456345344"
+   }
+]
\ No newline at end of file
diff --git a/agent/gsm.ini b/agent/gsm.ini
deleted file mode 100644
index f53b075..0000000
--- a/agent/gsm.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-/dev/ttyUSB0 +393409821322
-/dev/ttyUSB1 +443312123452
-/dev/ttyUSB2 +913446435634
-/dev/ttyUSB3 +12456345344
diff --git a/frontend/config/api.ini b/frontend/config/api.ini
deleted file mode 100644
index a7b40c8..0000000
--- a/frontend/config/api.ini
+++ /dev/null
@@ -1 +0,0 @@
-supersecretegakey1234123
diff --git a/frontend/config/api.json b/frontend/config/api.json
new file mode 100644
index 0000000..98fcfb0
--- /dev/null
+++ b/frontend/config/api.json
@@ -0,0 +1,3 @@
+{
+   "key":"supersecretegakey1234123"
+}
\ No newline at end of file