diff --git a/backend/fleet_management/admin.py b/backend/fleet_management/admin.py
index 6adb123c..a16a8484 100644
--- a/backend/fleet_management/admin.py
+++ b/backend/fleet_management/admin.py
@@ -48,7 +48,7 @@ class Meta:
 class DriveAdmin(ImportExportModelAdmin):
     resource_class = DriveResource
     list_filter = ("driver__country",)
-    list_display = ("__str__", "country")
+    list_display = ("__str__", "country", "is_verified")
 
 
 class CustomUserAdmin(UserAdmin):
diff --git a/backend/fleet_management/serializers.py b/backend/fleet_management/serializers.py
index 1fcaf111..c8df9448 100644
--- a/backend/fleet_management/serializers.py
+++ b/backend/fleet_management/serializers.py
@@ -90,6 +90,7 @@ class Meta:
             "end_location",
             "timestamp",
             "signature",
+            "is_verified",
         )
         read_only_fields = ("is_verified",)
 
diff --git a/backend/pah_fm/settings.py b/backend/pah_fm/settings.py
index fffb7c9a..eec23b9a 100644
--- a/backend/pah_fm/settings.py
+++ b/backend/pah_fm/settings.py
@@ -28,12 +28,14 @@
 DEBUG = os.environ.get('DEBUG', '0') == '1'
 
 ALLOWED_HOSTS = [
-        'localhost',
-        '127.0.0.1',
-        '52.232.62.212',
-        '.pahfm.codeforpoznan.pl',
-        '.lemik.pl',
-    ]
+    'localhost',
+    '127.0.0.1',
+    '52.232.62.212',
+    '.pahfm.codeforpoznan.pl',
+]
+
+if DEBUG:
+    ALLOWED_HOSTS = ['*']
 
 
 # Application definition
diff --git a/frontend/src/components/MainForm.vue b/frontend/src/components/MainForm.vue
index 266ec878..d8f86004 100644
--- a/frontend/src/components/MainForm.vue
+++ b/frontend/src/components/MainForm.vue
@@ -14,10 +14,11 @@
               @reset.prevent="$emit('reset')"
             >
               <slot />
-              <div class="form-group">
+              <div class="form-group form-buttons">
                 <button class="btn btn-primary col-xs-3">
                   {{ $t('drive_form.submit') }}
                 </button>
+                <span style="flex: 1" />
                 <input
                   v-if="resetable"
                   type="reset"
@@ -55,3 +56,10 @@ export default {
   },
 };
 </script>
+
+<style scoped lang="scss">
+  .form-buttons {
+    display: flex;
+    flex-direction: row;
+  }
+</style>
diff --git a/frontend/src/services/crypto.js b/frontend/src/services/crypto.js
index 14eab79a..a6c08410 100644
--- a/frontend/src/services/crypto.js
+++ b/frontend/src/services/crypto.js
@@ -37,6 +37,8 @@ const modexp = (base, exp, mod) => {
   return res;
 };
 
-export const sign = (msg, priv) => modexp(msg, priv.d, priv.n);
+const int = n => parseInt(n, 10);
 
-export const verify = (msg, sgn, pub) => modexp(sgn, pub.e, pub.n) === msg % pub.n;
+export const sign = (msg, d, n) => modexp(int(msg), int(d), int(n));
+
+export const verify = (msg, sgn, e, n) => modexp(int(sgn), int(e), int(n)) === int(msg) % int(n);
diff --git a/frontend/src/store/actions.js b/frontend/src/store/actions.js
index 87359c1b..b2136d69 100644
--- a/frontend/src/store/actions.js
+++ b/frontend/src/store/actions.js
@@ -92,6 +92,7 @@ export const actions = {
     try {
       await post('drives', mappedDrive);
       commit(SYNC_ITEM_SUCCESS, timestamp);
+      dispatch(SYNC);
     } catch (e) {
       if (e.response && e.response.status === 409) {
         // was synced previously
diff --git a/frontend/src/store/index.js b/frontend/src/store/index.js
index 796a8802..3ff46c12 100644
--- a/frontend/src/store/index.js
+++ b/frontend/src/store/index.js
@@ -12,6 +12,7 @@ import { modules } from './modules';
 import { totalMileageReducer, totalMileageFilter } from '../utils';
 
 export const USER = 'user';
+export const HASH = 'hash';
 export const CARS = 'cars';
 export const LANGUAGE = 'language';
 
@@ -21,6 +22,7 @@ Vue.use(Vuex);
 
 const initialState = {
   [USER]: null,
+  [HASH]: null,
   [INCORRECT_DRIVE_ENTRIES]: [],
   [UNSYNCHRONISED_DRIVES]: [],
   [LANGUAGE]: null,
diff --git a/frontend/src/translations.json b/frontend/src/translations.json
index 14ed249c..c681a14b 100644
--- a/frontend/src/translations.json
+++ b/frontend/src/translations.json
@@ -56,7 +56,8 @@
       "project": "Проект",
       "starting_mileage": "Початкове значення вимірювального приладу",
       "unsynced_drives": "Не синхронізовані поїздки",
-      "total_mileage": "Total {total} km"
+      "total_mileage": "Всього {total} км",
+      "unverified_drive": "Цей привід не перевірено, зв'яжіться з людиною з ПАУ, відповідальною за накопичувачі, щоб вирішити його"
     },
     "header": {
       "polish_humanitarian_action": "Польська Гуманітарна Акція"
@@ -142,7 +143,8 @@
       "project": "Project",
       "starting_mileage": "Starting mileage:",
       "unsynced_drives": "Unsynchronized drives",
-      "total_mileage": "Total {total} km"
+      "total_mileage": "Total {total} km",
+      "unverified_drive": "This drive was not verified, contact with a person from PAH responsible for drives to solve it."
     },
     "header": {
       "polish_humanitarian_action": "Polish Humanitarian Action"
@@ -228,7 +230,8 @@
       "project": "Projekt",
       "starting_mileage": "Początkowy stan licznika:",
       "unsynced_drives": "Przejazdy niezsynchronizowane",
-      "total_mileage": "Razem {total} km"
+      "total_mileage": "Razem {total} km",
+      "unverified_drive": "Ten przejazd nie został zweryfikowany, skontaktuj się z osobą z PAH odpowiedzialną za przejazdy by to wyjaśnić."
     },
     "login": {
       "password": "Hasło",
diff --git a/frontend/src/views/DriveFormView.vue b/frontend/src/views/DriveFormView.vue
index f2c09f5c..16c62e90 100644
--- a/frontend/src/views/DriveFormView.vue
+++ b/frontend/src/views/DriveFormView.vue
@@ -41,7 +41,7 @@
                       && Number(event.key) <= 9
                       && event.target.value < 20000000)"
         type="number"
-        v-model="form.startMileage"
+        v-model.number="form.startMileage"
         name="startMileage"
         @input="syncToLocalStorage"
         class="form-control"
@@ -148,7 +148,7 @@
                       && Number(event.key) <= 9
                       && event.target.value < 20000000)"
         type="number"
-        v-model="form.endMileage"
+        v-model.number="form.endMileage"
         @input="syncToLocalStorage"
         name="endMileage"
         class="form-control"
@@ -159,7 +159,7 @@
       <label for="driveHash">{{ $t('drive_form.drive_hash') }}</label>
       <input
         id="driveHash"
-        type="number"
+        type="text"
         v-model.number="computeHash"
         class="form-control"
         readonly
@@ -169,15 +169,12 @@
       <label for="signature">{{ $t('drive_form.signature') }}</label>
       <input
         id="signature"
-        type="number"
         name="signature"
-        min="0"
+        type="text"
+        pattern="[0-9]{6}"
+        inputmode="numeric"
         maxlength="6"
-        v-model.number="form.signature"
-        onkeypress="return event.key === 'Enter'
-                      || (Number(event.key) >= 0
-                      && Number(event.key) <= 9
-                      && event.target.value < 20000000)"
+        v-model="form.signature"
         class="form-control"
         :class="{ 'is-invalid': isInvalid['signature'] }"
       >
@@ -185,7 +182,6 @@
     <div class="form-group col-xs-12">
       {{ $t('drive_form.distance_traveled', { distance: distance }) }}
     </div>
-
     <b-alert
       class="col-xs-12"
       variant="success"
@@ -200,10 +196,18 @@
       variant="secondary"
       dismissible
       :show="confirmationOffline"
-      @dismissed="confirmationffline = false"
+      @dismissed="confirmationOffline=false"
     >
       <b>{{ $t('drive_form.drive_added_offline_notification') }}</b>
     </b-alert>
+    <b-alert
+      class="col-xs-12"
+      variant="warning"
+      dismissible
+      :show="(confirmationOnline || confirmationOffline) && !isVerified"
+    >
+      <b>{{ $t('drives.unverified_drive') }}</b>
+    </b-alert>
   </main-form>
 </template>
 
@@ -260,7 +264,7 @@ export default {
   components: { vSelect, MainForm },
   mixins: [FormMixin, GroupGuardMixin],
   mounted() {
-    this.loadFormData({ ...initialFormData });
+    this.loadFormData(initialFormData);
   },
   data() {
     return {
@@ -281,23 +285,20 @@ export default {
       this.validateForm(this.validator);
       this.confirmationOffline = false;
       this.confirmationOnline = false;
+      this.isVerified = false;
 
       if (this.listOfErrors.length === 0) {
-        const passenger = this.passengers.find(p => p.value === parseInt(this.form.passenger, 10));
-        const pubKey = {
-          e: parseInt(passenger.rsaPubE, 10),
-          n: parseInt(passenger.rsaModulusN, 10),
-        };
-        const verified = verify(
-          parseInt(this.computeHash, 10),
+        const passenger = this.passengers.find(p => p.value.toString() === this.form.passenger);
+        this.isVerified = verify(
+          this.computeHash,
           this.form.signature || 0,
-          pubKey,
+          passenger.rsaPubE,
+          passenger.rsaModulusN,
         );
         this[actions.SUBMIT]({
           form: {
             ...this.form,
-
-            verified,
+            isVerified: this.isVerified,
             passengers: [this.form.passenger],
             timestamp: Math.floor(Date.now() / 1000),
           },
@@ -315,11 +316,7 @@ export default {
     },
     validator(data) {
       const { startMileage, endMileage } = data;
-      if (
-        !!startMileage &&
-        !!endMileage &&
-        parseInt(startMileage, 10) >= parseInt(endMileage, 10)
-      ) {
+      if (!!startMileage && !!endMileage && startMileage >= endMileage) {
         const errorStartMileage = this.$t('drive_form.start_mileage_error');
         const errorEndMileage = this.$t('drive_form.end_mileage_error');
         return [errorStartMileage, errorEndMileage];
diff --git a/frontend/src/views/DrivesView.vue b/frontend/src/views/DrivesView.vue
index b36a34cc..5afc7080 100644
--- a/frontend/src/views/DrivesView.vue
+++ b/frontend/src/views/DrivesView.vue
@@ -23,11 +23,11 @@
       class="card"
       v-for="drive in unsyncedDrives"
       :key="drive.id"
-      :class="{ verified: drive.verified }"
     >
       <div
         class="card-header"
         @click="showDrive(drive.timestamp)"
+        :class="{ verified: drive.isVerified }"
       >
         <h5 class="mb-0">
           <span class="font-weight-bold">{{ drive.date }}</span>
@@ -56,6 +56,13 @@
             <span class="font-weight-bold mr-1">{{ $t('drives.ending_mileage') }}</span>
             <span>{{ drive.endMileage }}</span>
           </p>
+          <div
+            v-if="!drive.isVerified"
+            class="alert alert-warning col-xs-12"
+            role="alert"
+          >
+            {{ $t('drives.unverified_drive') }}
+          </div>
         </div>
       </div>
     </div>
@@ -80,11 +87,11 @@
       <div
         class="card-header"
         @click="showDrive(drive.id)"
-        :class="{ verified: drive.verified }"
+        :class="{ verified: drive.isVerified }"
       >
         <h5 class="mb-0">
           <span class="font-weight-bold">{{ drive.date }}</span>
-          {{ $t('drives.from_to', { from: drive.startLocation, destination: drive.endLocation}) }}
+          {{ $t('drives.from_to', { from: drive.startLocation, destination: drive.endLocation }) }}
         </h5>
       </div>
       <div :class="['collapse', { show: visibleDrive === drive.id }]">
@@ -109,6 +116,13 @@
             <span class="font-weight-bold mr-1">{{ $t('drives.ending_mileage') }}</span>
             <span>{{ drive.endMileage }}</span>
           </p>
+          <div
+            v-if="!drive.isVerified"
+            class="alert alert-warning col-xs-12"
+            role="alert"
+          >
+            {{ $t('drives.unverified_drive') }}
+          </div>
         </div>
       </div>
     </div>
@@ -158,11 +172,9 @@ export default {
 </script>
 
 <style scoped lang="scss">
-@import '../scss/base';
-
 .card-header {
   cursor: pointer;
-  border-left: 5px solid #28a745;
+  border-left: 5px solid #ffc107;
 }
 
 .heading {
@@ -170,6 +182,6 @@ export default {
 }
 
 .verified {
-  border-left: 5px solid #ffc107;
+  border-left: 5px solid #28a745;
 }
 </style>
diff --git a/frontend/src/views/PassengerSubmitView.vue b/frontend/src/views/PassengerSubmitView.vue
index 2b7fd36b..731455e2 100644
--- a/frontend/src/views/PassengerSubmitView.vue
+++ b/frontend/src/views/PassengerSubmitView.vue
@@ -10,8 +10,8 @@
                 id="signature"
                 type="text"
                 name="signature"
-                v-model.number="computeSignature"
                 class="form-control passenger-input"
+                :value="computeSignature()"
                 readonly
               >
             </div>
@@ -31,7 +31,7 @@ import '../scss/passenger.scss';
 import { GET_HASH } from '../store/constants';
 import { sign } from '../services/crypto';
 import { USER } from '../store';
-import { padWithZeros } from '../utils';
+import { padWithZeros as pad } from '../utils';
 
 export default {
   mixins: [GroupGuardMixin],
@@ -43,15 +43,12 @@ export default {
     return next({ path: '/passenger' });
   },
   computed: {
-    getHash: undefined,
     ...mapState([USER]),
     ...mapGetters([GET_HASH]),
+  },
+  methods: {
     computeSignature() {
-      const privKey = {
-        d: parseInt(this.user.rsaPrivD, 10),
-        n: parseInt(this.user.rsaModulusN, 10),
-      };
-      return padWithZeros(sign(this.getHash, privKey), 6);
+      return pad(sign(this.getHash, this.user.rsaPrivD, this.user.rsaModulusN), 6);
     },
   },
 };
diff --git a/frontend/src/views/PassengerView.vue b/frontend/src/views/PassengerView.vue
index ace21c61..e46c5dcf 100644
--- a/frontend/src/views/PassengerView.vue
+++ b/frontend/src/views/PassengerView.vue
@@ -8,14 +8,19 @@
     <div class="form-group">
       <label for="hash">{{ $t('passenger_form.hash') }}</label>
       <input
-        type="number"
-        @change="syncToLocalStorage"
-        v-model.number="form.hash"
         id="hash"
         name="hash"
-        max="999999"
-        step="1"
-        min="0"
+        type="text"
+        pattern="[0-9]{6}"
+        inputmode="numeric"
+        maxlength="6"
+        @change="syncToLocalStorage"
+        v-model="form.hash"
+        onkeypress="return event.key === 'Enter'
+                      || event.key === 'Backspace'
+                      || (Number(event.key) >= 0
+                      && Number(event.key) <= 9
+                      && event.target.value < 20000000)"
         class="form-control passenger-input"
         :class="{ 'is-invalid': isInvalid.hash }"
       >
@@ -61,7 +66,7 @@ export default {
       }
     },
     validator() {
-      if (String(this.form.hash).length !== 6) {
+      if (this.form.hash.length !== 6) {
         this.isInvalid.hash = true;
         return [this.$t('passenger_form.invalid_length')];
       }