diff --git a/client/src/components/hastic_pod/index.ts b/client/src/components/hastic_pod/index.ts
index 62eaac3..ab0dd5d 100644
--- a/client/src/components/hastic_pod/index.ts
+++ b/client/src/components/hastic_pod/index.ts
@@ -3,7 +3,7 @@ import { AxisRange } from "@chartwerk/core/dist/types";
 import { BrushOrientation } from "@chartwerk/core";
 import { SegmentsSet } from "@/types/segment_set";
 import { ANALYTIC_UNIT_COLORS } from "@/types/colors"
-import { Segment, SegmentId } from "@/types/segment";
+import { Segment, SegmentId, SegmentType } from "@/types/segment";
 
 export type TimeRange = { from: number, to: number };
 export type UpdateDataCallback = (range: TimeRange) => Promise<{
@@ -50,8 +50,6 @@ export class HasticPod extends LinePod {
       }
     });
 
-    console.log( BrushOrientation.VERTICAL);
-
     this._csc = csc;
     this._dsc = dsc;
     this._ctrlKeyIsDown = false;
@@ -222,6 +220,10 @@ export class HasticPod extends LinePod {
       .attr('fill', ANALYTIC_UNIT_COLORS[0])
       .attr('opacity', '0.8')
       .attr('pointer-events', 'none')
+    
+    if(segment.segmentType == SegmentType.LABEL) {
+      r.attr('style', 'stroke:rgb(0,0,0); stroke-width:2')
+    }
   }
 
   private async _updateRange(range: AxisRange[]) {
diff --git a/client/src/services/segments.service.ts b/client/src/services/segments.service.ts
index c011f79..b29015e 100644
--- a/client/src/services/segments.service.ts
+++ b/client/src/services/segments.service.ts
@@ -18,10 +18,10 @@ export async function getSegments(from: number, to: number): Promise<Segment[]>
   const uriAnalytics = ANALYTICS_API_URL + `?from=${from}&to=${to}`;
   const resAnalytics = await axios.get(uriAnalytics);
 
-  const result = res["data"] as Segment[];
-  const resultAnalytics = resAnalytics["data"] as Segment[];
+  const result = res["data"] as any[];
+  const resultAnalytics = resAnalytics["data"] as any[];
 
-  return result.concat(resultAnalytics);
+  return result.concat(resultAnalytics).map(Segment.fromObject);
 }
 
 export async function postSegment(segment: Segment): Promise<SegmentId> {
diff --git a/client/src/types/segment.ts b/client/src/types/segment.ts
index 37e4ea0..eaddac1 100644
--- a/client/src/types/segment.ts
+++ b/client/src/types/segment.ts
@@ -1,7 +1,12 @@
 export type SegmentId = string;
 
+export enum SegmentType {
+  LABEL = 'Label',
+  DETECTION = 'Detection'
+}
+
 export class Segment {
-  constructor(private _id: SegmentId | undefined, public from: number, public to: number, segmentType = 1) {
+  constructor(private _id: SegmentId | undefined, public from: number, public to: number, segmentType = SegmentType.LABEL) {
     if(this._id === undefined) {
       throw new Error('id is undefined');
     }
@@ -36,17 +41,26 @@ export class Segment {
   }
 
   // TODO: remove this and make original inheritence
-  _segmentType: number
-  get segmentType(): number { return this._segmentType; }
-  set segmentType(value) { this._segmentType = value; }
+  _segmentType: SegmentType
+  get segmentType(): SegmentType { return this._segmentType; }
+  set segmentType(value: SegmentType) { this._segmentType = value; }
 
   toObject() {
     return {
       id: this.id,
       from: this.from,
       to: this.to,
-      segment_type: "Label"
+      segment_type: 'Label'
     }
   }
 
+  static fromObject(obj: any) {
+    return new Segment(
+      obj.id,
+      obj.from,
+      obj.to,
+      obj.segment_type
+    );
+  }
+
 }
\ No newline at end of file
diff --git a/server/src/lib.rs b/server/src/lib.rs
index 0600086..0601b5c 100644
--- a/server/src/lib.rs
+++ b/server/src/lib.rs
@@ -1,2 +1,3 @@
 pub mod config;
 pub mod services;
+pub mod utils;
diff --git a/server/src/services/analytic_service.rs b/server/src/services/analytic_service.rs
index 8c01cda..5548d44 100644
--- a/server/src/services/analytic_service.rs
+++ b/server/src/services/analytic_service.rs
@@ -1,6 +1,6 @@
-use crate::config::Config;
+use crate::{config::Config, utils::get_random_str};
 
-use super::{metric_service::MetricService, segments_service::{Segment, SegmentType}};
+use super::{metric_service::MetricService, segments_service::{ID_LENGTH, Segment, SegmentType}};
 
 use subbeat::metric::Metric;
 
@@ -42,7 +42,8 @@ impl AnalyticService {
             } else {
                 if from.is_some() {
                     result.push(Segment {
-                        id: None,
+                        // TODO: persist detections together with id
+                        id: Some(get_random_str(ID_LENGTH)),
                         from: from.unwrap(),
                         to: *t,
                         segment_type: SegmentType::Detection,
@@ -52,9 +53,10 @@ impl AnalyticService {
             }
         }
 
+        // TODO: don't repeat myself
         if from.is_some() {
             result.push(Segment {
-                id: None,
+                id: Some(get_random_str(ID_LENGTH)),
                 from: from.unwrap(),
                 to,
                 segment_type: SegmentType::Detection,
diff --git a/server/src/services/segments_service.rs b/server/src/services/segments_service.rs
index 6bb258e..389c88f 100644
--- a/server/src/services/segments_service.rs
+++ b/server/src/services/segments_service.rs
@@ -4,10 +4,10 @@ use serde::{Deserialize, Serialize};
 
 use std::sync::{Arc, Mutex};
 
-use std::iter::repeat_with;
+use crate::utils::get_random_str;
 
 
-const ID_LENGTH: usize = 20;
+pub const ID_LENGTH: usize = 20;
 pub type SegmentId = String;
 
 
@@ -85,9 +85,7 @@ impl SegmentsService {
 
     // returns id of created segment
     pub fn insert_segment(&self, segment: &Segment) -> anyhow::Result<Segment> {
-        let id: SegmentId = repeat_with(fastrand::alphanumeric)
-            .take(ID_LENGTH)
-            .collect();
+        let id: SegmentId = get_random_str(ID_LENGTH);
 
         // merging
         let sgms = self.get_segments_intersected(segment.from, segment.to)?;
diff --git a/server/src/utils.rs b/server/src/utils.rs
new file mode 100644
index 0000000..e0b8ffb
--- /dev/null
+++ b/server/src/utils.rs
@@ -0,0 +1,6 @@
+use std::iter::repeat_with;
+
+pub fn get_random_str(len: usize) -> String {
+    return repeat_with(fastrand::alphanumeric).take(len)
+        .collect();
+}