diff --git a/cmsranking/Config.py b/cmsranking/Config.py
index 27a37d3a20..1d96f10eec 100644
--- a/cmsranking/Config.py
+++ b/cmsranking/Config.py
@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 import logging
 import os
 import sys
@@ -37,6 +37,11 @@ def default_path(name):
     return os.path.join(sys.prefix, name)
 
 
+@dataclass
+class PublicConfig:
+    show_id_column: bool = False
+
+
 @dataclass
 class Config:
     # Connection.
@@ -51,6 +56,9 @@ class Config:
     username: str = "usern4me"
     password: str = "passw0rd"
 
+    # UI.
+    public: PublicConfig = field(default_factory=PublicConfig)
+
     # Buffers
     buffer_size: int = 100
 
diff --git a/cmsranking/RankingWebServer.py b/cmsranking/RankingWebServer.py
index bd55a0035f..9b1d58f3b7 100755
--- a/cmsranking/RankingWebServer.py
+++ b/cmsranking/RankingWebServer.py
@@ -42,7 +42,7 @@
 # Needed for initialization. Do not remove.
 import cmsranking.Logger  # noqa
 from cmscommon.eventsource import EventSource
-from cmsranking.Config import load_config
+from cmsranking.Config import PublicConfig, load_config
 from cmsranking.Contest import Contest
 from cmsranking.Entity import InvalidData
 from cmsranking.Scoring import ScoringStore
@@ -473,6 +473,32 @@ def wsgi_app(self, environ, start_response):
         return response
 
 
+class PublicConfigHandler:
+
+    def __init__(self, pub_config: PublicConfig):
+        self.pub_config = pub_config
+
+    def __call__(self, environ, start_response):
+        return self.wsgi_app(environ, start_response)
+
+    @responder
+    def wsgi_app(self, environ, start_response):
+        request = Request(environ)
+        request.encoding_errors = "strict"
+
+        response = Response()
+        response.status_code = 200
+        response.mimetype = "application/json"
+        print(str(self.pub_config))
+        response.data = json.dumps(
+            self.pub_config,
+            default=lambda o: o.__dict__,
+            sort_keys=True,
+        )
+
+        return response
+
+
 class RoutingHandler:
 
     def __init__(
@@ -482,6 +508,7 @@ def __init__(
         logo_handler: ImageHandler,
         score_handler: ScoreHandler,
         history_handler: HistoryHandler,
+        public_config_handler: PublicConfigHandler,
     ):
         self.router = Map([
             Rule("/", methods=["GET"], endpoint="root"),
@@ -489,6 +516,7 @@ def __init__(
             Rule("/scores", methods=["GET"], endpoint="scores"),
             Rule("/events", methods=["GET"], endpoint="events"),
             Rule("/logo", methods=["GET"], endpoint="logo"),
+            Rule("/config", methods=["GET"], endpoint="public_config")
         ], encoding_errors="strict")
 
         self.event_handler = event_handler
@@ -496,6 +524,7 @@ def __init__(
         self.score_handler = score_handler
         self.history_handler = history_handler
         self.root_handler = root_handler
+        self.public_config_handler = public_config_handler
 
     def __call__(self, environ, start_response):
         return self.wsgi_app(environ, start_response)
@@ -517,6 +546,8 @@ def wsgi_app(self, environ, start_response):
             return self.score_handler(environ, start_response)
         elif endpoint == "history":
             return self.history_handler(environ, start_response)
+        elif endpoint == 'public_config':
+            return self.public_config_handler(environ, start_response)
 
 
 def main() -> int:
@@ -593,7 +624,8 @@ def main() -> int:
             os.path.join(config.lib_dir, '%(name)s'),
             os.path.join(web_dir, 'img', 'logo.png')),
         ScoreHandler(stores),
-        HistoryHandler(stores))
+        HistoryHandler(stores),
+        PublicConfigHandler(config.public))
 
     wsgi_app = SharedDataMiddleware(DispatcherMiddleware(
         toplevel_handler, {
diff --git a/cmsranking/static/Config.js b/cmsranking/static/Config.js
index b04e59f924..09a8869394 100644
--- a/cmsranking/static/Config.js
+++ b/cmsranking/static/Config.js
@@ -73,4 +73,24 @@ var Config = new function () {
     self.get_history_url = function () {
         return "history";
     }
+
+    self.get_public_config_url = function () {
+        return "config";
+    }
+};
+
+var PublicConfig = {
+    show_id_column: false
 };
+
+$.ajax({
+    url: Config.get_public_config_url(),
+    dataType: "json",
+    async: false,
+    success: function (data, status, xhr) {
+        PublicConfig = data;
+    },
+    error: function () {
+        console.error("Error while getting public configuration data");
+    }
+});
diff --git a/cmsranking/static/Scoreboard.js b/cmsranking/static/Scoreboard.js
index 699eb857cc..ee16ca5a39 100644
--- a/cmsranking/static/Scoreboard.js
+++ b/cmsranking/static/Scoreboard.js
@@ -194,9 +194,9 @@ var Scoreboard = new function () {
     <th class=\"sel\"></th> \
     <th class=\"rank\">Rank</th> \
     <th colspan=\"10\" class=\"f_name\">First Name</th> \
-    <th colspan=\"10\" class=\"l_name\">Last Name</th> \
-    <th class=\"user_id\">ID</th> \
-    <th class=\"team\">Team</th>";
+    <th colspan=\"10\" class=\"l_name\">Last Name</th>" +
+            (PublicConfig.show_id_column ? "<th class=\"user_id\">ID</th>" : "") +
+            "<th class=\"team\">Team</th>";
 
         var contests = DataStore.contest_list;
         for (var i in contests) {
@@ -244,8 +244,8 @@ var Scoreboard = new function () {
     <td class=\"sel\"></td> \
     <td class=\"rank\">" + user["rank"] + "</td> \
     <td colspan=\"10\" class=\"f_name\">" + escapeHTML(user["f_name"]) + "</td> \
-    <td colspan=\"10\" class=\"l_name\">" + escapeHTML(user["l_name"]) + "</td> \
-    <td class=\"user_id\">" + user["key"] + "</td>";
+    <td colspan=\"10\" class=\"l_name\">" + escapeHTML(user["l_name"]) + "</td>" +
+            (PublicConfig.show_id_column ? "<td class=\"user_id\">" + user["key"] + "</td>" : "");
 
         if (user['team']) {
             result += " \
diff --git a/config/cms_ranking.sample.toml b/config/cms_ranking.sample.toml
index 5d006e4890..5807e42e36 100644
--- a/config/cms_ranking.sample.toml
+++ b/config/cms_ranking.sample.toml
@@ -25,3 +25,7 @@ buffer_size = 100
 #log_dir = "INSTALL_DIR/log/ranking"
 # Data directory (the scoreboard data is stored here).
 #lib_dir = "INSTALL_DIR/lib/ranking"
+
+# UI
+[public]
+show_id_column = false