diff --git a/SteamAuth/SteamGuardAccount.cs b/SteamAuth/SteamGuardAccount.cs
index 7101a3f..c0396c7 100644
--- a/SteamAuth/SteamGuardAccount.cs
+++ b/SteamAuth/SteamGuardAccount.cs
@@ -84,6 +84,17 @@ public async Task<string> GenerateSteamGuardCodeAsync()
         {
             return GenerateSteamGuardCodeForTime(await TimeAligner.GetSteamTimeAsync());
         }
+        
+        public async Task<bool> SignInViaQR(string idOfQR) { 
+            var postBody = new NameValueCollection();
+            postBody.Add("client_id", idOfQR);
+            postBody.Add("steamid", this.Session.SteamID.ToString());
+            postBody.Add("code", GenerateSteamGuardCode());
+            postBody.Add("code_type", "3");
+            var response = await SteamWeb.POSTRequest("https://api.steampowered.com/IAuthenticationService/UpdateAuthSessionWithSteamGuardCode/v1/", null, postBody, "X-eresult");
+            
+            return response == "1";
+        }
 
         public string GenerateSteamGuardCodeForTime(long time)
         {
diff --git a/SteamAuth/SteamWeb.cs b/SteamAuth/SteamWeb.cs
index f769c26..b215f79 100644
--- a/SteamAuth/SteamWeb.cs
+++ b/SteamAuth/SteamWeb.cs
@@ -23,7 +23,7 @@ public static async Task<string> GETRequest(string url, CookieContainer cookies)
             return response;
         }
 
-        public static async Task<string> POSTRequest(string url, CookieContainer cookies, NameValueCollection body)
+        public static async Task<string> POSTRequest(string url, CookieContainer cookies, NameValueCollection body, string headerName = null)
         {
             if (body == null)
                 body = new NameValueCollection();
@@ -36,6 +36,11 @@ public static async Task<string> POSTRequest(string url, CookieContainer cookies
                 wc.Headers[HttpRequestHeader.UserAgent] = SteamWeb.MOBILE_APP_USER_AGENT;
                 byte[] result = await wc.UploadValuesTaskAsync(new Uri(url), "POST", body);
                 response = Encoding.UTF8.GetString(result);
+
+                if (!string.IsNullOrEmpty(headerName) && wc.ResponseHeaders != null)
+                {
+                    return wc.ResponseHeaders[headerName] ?? null;
+                }
             }
             return response;
         }