diff --git a/locale/pl/config.suml b/locale/pl/config.suml
index b60d5d9a..6768545e 100644
--- a/locale/pl/config.suml
+++ b/locale/pl/config.suml
@@ -547,6 +547,7 @@ census:
                 - ['osobą niebinarną']
                 - ['osobą cispłciową']
                 - ['binarną osobą transpłciową']
+                # - ['nie wiem']
         -
             type: 'number'
             min: 1900
diff --git a/locale/pl/translations.suml b/locale/pl/translations.suml
index 6608cad0..2f5586b1 100644
--- a/locale/pl/translations.suml
+++ b/locale/pl/translations.suml
@@ -966,7 +966,7 @@ census:
             By uniknąć tendencyjności, <strong>kolejność propozycji jest losowa</strong>.
     agree: >
         Wyrażam zgodę na przetwarzanie moich odpowiedzi
-        oraz na użycie zanonimizowanej wersji mojego adresu IP oraz fingerprintu przeglądarki
+        oraz na użycie mojego adresu IP oraz fingerprintu przeglądarki
         do przeciwdziałania wandalizmom i spamowi.
         Dane te nie są w stanie zidentyfikować żadnej osoby,
         zostaną użyte wyłącznie w celu zapewnienia unikalności odpowiedzi
diff --git a/migrations/022-census-suspicious.sql b/migrations/022-census-suspicious.sql
new file mode 100644
index 00000000..bc7f971f
--- /dev/null
+++ b/migrations/022-census-suspicious.sql
@@ -0,0 +1,8 @@
+-- Up
+
+ALTER TABLE census ADD COLUMN ip TEXT NULL DEFAULT NULL;
+ALTER TABLE census ADD COLUMN userAgent TEXT NULL DEFAULT NULL;
+ALTER TABLE census ADD COLUMN acceptLanguage TEXT NULL DEFAULT NULL;
+ALTER TABLE census ADD COLUMN suspicious INTEGER NOT NULL DEFAULT 0;
+
+-- Down
diff --git a/routes/census.vue b/routes/census.vue
index ba6fd3e9..08b8274b 100644
--- a/routes/census.vue
+++ b/routes/census.vue
@@ -168,6 +168,11 @@
                 countResponses,
             };
         },
+        mounted() {
+            if (process.client) {
+                this.finished = !!parseInt(window.localStorage.getItem('census-finished') || 0);
+            }
+        },
         methods: {
             startSurvey() {
                 this.q = 0;
@@ -224,6 +229,7 @@
                         writins: JSON.stringify(this.writins),
                     });
                     this.finished = true;
+                    window.localStorage.setItem('census-finished', '1');
                 }
                 this.$nextTick(() => {
                     if (this.$refs.questionform) {
diff --git a/server/routes/census.js b/server/routes/census.js
index 5ea90119..c695c381 100644
--- a/server/routes/census.js
+++ b/server/routes/census.js
@@ -38,19 +38,21 @@ router.get('/census/finished', async (req, res) => {
 });
 
 router.post('/census/submit', async (req, res) => {
-    if (await hasFinished(req)) {
-        return res.status(401).json({error: 'Unauthorised'});
-    }
+    const suspicious = await hasFinished(req);
 
     const id = ulid();
-    await req.db.get(SQL`INSERT INTO census (id, locale, edition, userId, fingerprint, answers, writins) VALUES (
+    await req.db.get(SQL`INSERT INTO census (id, locale, edition, userId, fingerprint, answers, writins, ip, userAgent, acceptLanguage, suspicious) VALUES (
         ${id},
         ${req.config.locale},
         ${req.config.census.edition},
         ${req.user ? req.user.id : null},
         ${buildFingerprint(req)},
         ${req.body.answers},
-        ${req.body.writins}
+        ${req.body.writins},
+        ${req.ip},
+        ${req.headers['user-agent']},
+        ${req.headers['accept-language']},
+        ${suspicious}
     )`);
 
     return res.json(id);