diff --git a/bin/main.ml b/bin/main.ml
index 1d8cc81..3e7104b 100644
--- a/bin/main.ml
+++ b/bin/main.ml
@@ -6,7 +6,7 @@ open Twitter
 let start driver =
   let name_driver = prepare driver in
   let data_driver = run_process name_driver [] in
-  let session_id = get_session () in
+  let session_id = get_session (* ~headless:false *) () in
   data_driver, session_id
 ;;
 
diff --git a/bin/twitter.ml b/bin/twitter.ml
index d88158d..92bd23b 100644
--- a/bin/twitter.ml
+++ b/bin/twitter.ml
@@ -1,17 +1,24 @@
 open Pusk.Net
 open Pusk.Utils
 
-let login_twitter ctx _username _password =
-  (* Navigate to login page *)
+let login_twitter ctx username _password =
+  (* Navigate to login page and wait for page loaded*)
   ignore (navigate ctx.session_id "https://twitter.com/i/flow/login");
-  (* Extra wait to be sure the page is loaded *)
   Unix.sleep 5;
-  match
-    find
-      ctx.session_id
-      (XPath
-         "/html/body/div[1]/div/div/div[1]/div/div/div/div/div/div/div[2]/div[2]/div/div/div[2]/div[2]/div/div/div/div[5]/label")
-  with
-  | Some l -> List.iter (fun e -> print_endline (Yojson.Safe.to_string e)) l
-  | None -> raise (Any "Username input not found")
+  (* Find username input *)
+  let element_id =
+    match
+      find
+        ctx.session_id
+        (XPath
+           "/html/body/div[1]/div/div/div[1]/div/div/div/div/div/div/div[2]/div[2]/div/div/div[2]/div[2]/div/div/div/div[5]/label/div/div[2]/div/input")
+    with
+    | [] -> raise (Any "Username input not found")
+    | _ as l ->
+      if List.length l > 1
+      then raise (Any "Too many element found as the username input")
+      else List.nth l 0
+  in
+  (* Insert the username *)
+  send_keys ctx.session_id element_id username
 ;;
diff --git a/lib/json.ml b/lib/json.ml
index e3c6f4e..48c1f5f 100644
--- a/lib/json.ml
+++ b/lib/json.ml
@@ -1,17 +1,19 @@
 open Utils
 
-let connection_payload =
-  {|
+let connection_payload headless =
+  fmt
+    {|
   {
     "capabilities": {
       "alwaysMatch": {
         "moz:firefoxOptions": {
-          "args": ["-headless"]
+          "args": [%s]
         }
       }
     }
   }
   |}
+    (if headless then "\"-headless\"" else "")
 ;;
 
 let navigate_payload url = fmt {|
@@ -35,3 +37,16 @@ let find_payload strategy value =
   }
   |} strategy value
 ;;
+
+let send_keys_payload text =
+  fmt
+    {|
+  {
+    "text": "%s",
+    "value": %s
+  }
+  |}
+    text
+    (Yojson.Safe.to_string
+       (`List (List.map (fun str -> `String str) (keys_to_typing text))))
+;;
diff --git a/lib/net.ml b/lib/net.ml
index 5d49ec2..49db7fe 100644
--- a/lib/net.ml
+++ b/lib/net.ml
@@ -29,8 +29,10 @@ let execute_get_request url = Lwt_main.run (send_get_request url)
 let execute_delete_request url = Lwt_main.run (send_delete_request url)
 
 (* Server MUST be started already *)
-let get_session () =
-  let response = execute_post_request (fmt "%s" driver_url) Json.connection_payload in
+let get_session ?(headless = true) () =
+  let response =
+    execute_post_request (fmt "%s" driver_url) (Json.connection_payload headless)
+  in
   match Yojson.Safe.from_string response with
   | `Assoc fields ->
     let value = List.assoc "value" fields in
@@ -91,7 +93,30 @@ let find session_id strategy =
   match Yojson.Safe.from_string response with
   | `Assoc fields ->
     (match List.assoc "value" fields with
-    | `List l -> Some l
-    | _ -> None)
+    | `List l ->
+      List.fold_left
+        (fun acc x ->
+          match x with
+          | `Assoc subfields ->
+            List.fold_left
+              (fun acc' (_, value) ->
+                match value with
+                | `String str -> str :: acc'
+                | _ -> acc')
+              acc
+              subfields
+          | _ -> acc)
+        []
+        l
+    | _ -> [])
   | _ -> raise (Any "wait_for_load | Invalid JSON")
 ;;
+
+let send_keys session_id element_id username =
+  let response =
+    execute_post_request
+      (fmt "%s/element/%s/value" (driver session_id) element_id)
+      (Json.send_keys_payload username)
+  in
+  print_endline response
+;;
diff --git a/lib/utils.ml b/lib/utils.ml
index 0f2cb2a..e76fde5 100644
--- a/lib/utils.ml
+++ b/lib/utils.ml
@@ -9,3 +9,11 @@ let load_dotenv =
   let path = "config/.env" in
   if Sys.file_exists path then Dotenv.export ~path ()
 ;;
+
+let keys_to_typing str =
+  let rec aux acc = function
+    | 0 -> acc
+    | n -> aux (String.sub str (n - 1) 1 :: acc) (n - 1)
+  in
+  aux [] (String.length str)
+;;