diff --git a/README.md b/README.md
index 0c16d4f..b2c7972 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ $ opam switch list
 ```
 
 ```sh
-$ opam install cohttp-lwt-unix tls-lwt dotenv
+$ opam install cohttp-lwt-unix tls-lwt dotenv twostep
 ```
 
 ## Name history
diff --git a/bin/dune b/bin/dune
index db6c5b1..6943e4e 100644
--- a/bin/dune
+++ b/bin/dune
@@ -2,4 +2,4 @@
  (public_name pusk)
  (name main)
  (modules main twitter)
- (libraries pusk))
+ (libraries pusk twostep))
diff --git a/bin/main.ml b/bin/main.ml
index 80147cd..f1fa0d1 100644
--- a/bin/main.ml
+++ b/bin/main.ml
@@ -25,7 +25,7 @@ let main ctx =
     | None, Some _ -> raise (Any "Username not set")
     | Some _, None -> raise (Any "Password not set")
   in
-  login_twitter ctx username password
+  login_twitter ctx username password (Sys.getenv_opt "TWITTER_TOTP")
 ;;
 
 let () =
diff --git a/bin/twitter.ml b/bin/twitter.ml
index 34bd121..6e7fd54 100644
--- a/bin/twitter.ml
+++ b/bin/twitter.ml
@@ -1,7 +1,8 @@
 open Pusk.Net
 open Pusk.Utils
+(* open Twostep *)
 
-let login_twitter ctx username password =
+let login_twitter ctx username password _secret =
   (* Navigate to login page and wait for page loaded*)
   ignore (navigate ctx.session_id "https://twitter.com/i/flow/login");
   Unix.sleep 5;
@@ -42,5 +43,14 @@ let login_twitter ctx username password =
   send_keys ctx.session_id input_password password;
   Unix.sleep 1;
   send_keys ctx.session_id input_password Keys.return;
-  Unix.sleep 5
+  Unix.sleep 5;
+  (* Detection of 2FA *)
+  (* TODO *)
+  (* Generate code if possible *)
+  (* let code =
+    match secret with
+    | Some seed -> Twostep.TOTP.code ~secret:seed ()
+    | None -> raise (Any "No TOTP code given, but TOTP required")
+  in *)
+  ()
 ;;