diff --git a/backend/migrations/versions/7726477fb5da_.py b/backend/migrations/versions/7726477fb5da_.py
new file mode 100644
index 0000000..6dd045e
--- /dev/null
+++ b/backend/migrations/versions/7726477fb5da_.py
@@ -0,0 +1,28 @@
+"""empty message
+
+Revision ID: 7726477fb5da
+Revises: b60bb67d1758
+Create Date: 2021-04-25 20:46:35.627535
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '7726477fb5da'
+down_revision = 'b60bb67d1758'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('data', sa.Column('tracked_time', sa.Integer(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('data', 'tracked_time')
+    # ### end Alembic commands ###
diff --git a/backend/models.py b/backend/models.py
index 710a880..5c9bf95 100644
--- a/backend/models.py
+++ b/backend/models.py
@@ -46,6 +46,7 @@ class Data(db.Model):
     __tablename__ = "data"
 
     id = db.Column("id", db.Integer(), primary_key=True)
+    tracked_time = db.Column("tracked_time", db.Integer(), default=0)
 
     project_id = db.Column(
         "project_id", db.Integer(), db.ForeignKey("project.id"), nullable=False
@@ -281,7 +282,9 @@ class Segmentation(db.Model):
     )
 
     values = db.relationship(
-        "LabelValue", secondary=annotation_table, back_populates="segmentations",
+        "LabelValue",
+        secondary=annotation_table,
+        back_populates="segmentations",
     )
 
     def set_start_time(self, start_time):
diff --git a/backend/routes/projects.py b/backend/routes/projects.py
index a21f6c9..6c675df 100644
--- a/backend/routes/projects.py
+++ b/backend/routes/projects.py
@@ -455,6 +455,7 @@ def get_segmentations_for_data(project_id, data_id):
 
         response = {
             "filename": data.filename,
+            "tracked_time": data.tracked_time,
             "original_filename": data.original_filename,
             "reference_transcription": data.reference_transcription,
             "is_marked_for_review": data.is_marked_for_review,
@@ -478,6 +479,7 @@ def update_data(project_id, data_id):
         return jsonify(message="Missing JSON in request"), 400
 
     is_marked_for_review = bool(request.json.get("is_marked_for_review", False))
+    tracked_time = int(request.json.get("tracked_time", 0))
 
     try:
         request_user = User.query.filter_by(username=identity["username"]).first()
@@ -492,7 +494,8 @@ def update_data(project_id, data_id):
             return jsonify(message="Unauthorized access!"), 401
 
         data.update_marked_review(is_marked_for_review)
-
+        if tracked_time:
+            data.tracked_time = tracked_time
         db.session.add(data)
         db.session.commit()
         db.session.refresh(data)
diff --git a/examples/upload_data/upload_data.py b/examples/upload_data/upload_data.py
index ff7f07f..a62d77d 100644
--- a/examples/upload_data/upload_data.py
+++ b/examples/upload_data/upload_data.py
@@ -65,6 +65,7 @@
     "reference_transcription": reference_transcription,
     "username": username,
     "segmentations": segmentations,
+    "tracked_time": 0,
     "is_marked_for_review": is_marked_for_review,
 }
 
diff --git a/frontend/src/pages/annotate.js b/frontend/src/pages/annotate.js
index b887110..29e8f76 100644
--- a/frontend/src/pages/annotate.js
+++ b/frontend/src/pages/annotate.js
@@ -29,6 +29,7 @@ class Annotate extends React.Component {
     this.state = {
       isPlaying: false,
       projectId,
+      localTrackedTime: 0,
       dataId,
       labels: {},
       labelsUrl: `/api/projects/${projectId}/labels`,
@@ -49,7 +50,47 @@ class Annotate extends React.Component {
     this.transcription = null;
   }
 
+  handleTrackTimeChange() {
+    axios({
+      method: "patch",
+      url: this.state.dataUrl,
+      data: {
+        tracked_time: this.state.localTrackedTime,
+      },
+    })
+      .then(() => {
+        this.setState({
+          successMessage: "Tracked Time updated succesfully",
+        });
+      })
+      .catch((error) => {
+        console.log(error);
+        this.setState({
+          errorMessage: "Tracked Time not updated",
+        });
+      });
+  }
+
+  // fired, when changing to an internal page
+  componentWillUnmount() {
+    clearInterval(this.interval);
+    this.handleTrackTimeChange();
+  }
+
   componentDidMount() {
+    // anytime changed to another page
+    window.onbeforeunload = function () {
+      this.handleTrackTimeChange();
+    }.bind(this);
+
+    this.interval = setInterval(
+      () =>
+        this.setState({
+          localTrackedTime: this.state.localTrackedTime + 1000,
+        }),
+      1000
+    );
+
     const { labelsUrl, dataUrl } = this.state;
     this.setState({ isDataLoading: true });
     const wavesurfer = WaveSurfer.create({
@@ -108,6 +149,7 @@ class Annotate extends React.Component {
           is_marked_for_review,
           segmentations,
           filename,
+          tracked_time,
         } = response[1].data;
 
         const regions = segmentations.map((segmentation) => {
@@ -121,11 +163,16 @@ class Annotate extends React.Component {
             },
           };
         });
-
+        if (tracked_time) {
+          this.setState({
+            localTrackedTime: this.state.localTrackedTime + tracked_time,
+          });
+        }
         this.setState({
           isDataLoading: false,
           referenceTranscription: reference_transcription,
           isMarkedForReview: is_marked_for_review,
+          localTrackedTime: tracked_time,
           filename,
         });
 
@@ -352,6 +399,7 @@ class Annotate extends React.Component {
       zoom,
       isPlaying,
       labels,
+      localTrackedTime,
       isDataLoading,
       isMarkedForReview,
       referenceTranscription,
@@ -510,7 +558,7 @@ class Annotate extends React.Component {
                                   selectedSegment.data.annotations &&
                                   selectedSegment.data.annotations[key] &&
                                   selectedSegment.data.annotations[key][
-                                  "values"
+                                    "values"
                                   ]) ||
                                 (value["type"] === "multiselect" ? [] : "")
                               }
@@ -575,6 +623,10 @@ class Annotate extends React.Component {
                     >
                       Mark for review
                     </label>
+                    <br></br>
+                    <label className="form-check-label">
+                      Tracked Time: {Math.floor(localTrackedTime / 600)} Seconds
+                    </label>
                   </div>
                 </div>
               </div>