diff --git a/.gitignore b/.gitignore
index a5b8309..16674e3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,4 @@ timeline/.idea/copilot/
 
 ### Project Specific Files ###
 **/resources/*.schema.json
+/sample/**/*.json
diff --git a/parser/build.gradle.kts b/parser/build.gradle.kts
index 59af1c5..7366106 100644
--- a/parser/build.gradle.kts
+++ b/parser/build.gradle.kts
@@ -19,6 +19,7 @@ repositories {
 
 dependencies {
   implementation("com.squareup.moshi:moshi-kotlin:1.15.1")
+  implementation("com.squareup.moshi:moshi-adapters:1.15.1")
   ksp("com.squareup.moshi:moshi-kotlin-codegen:1.15.1")
   implementation("com.squareup.okio:okio:3.9.0")
   testImplementation("org.jetbrains.kotlin:kotlin-test")
diff --git a/parser/src/main/kotlin/Main.kt b/parser/src/main/kotlin/Main.kt
deleted file mode 100644
index 9553807..0000000
--- a/parser/src/main/kotlin/Main.kt
+++ /dev/null
@@ -1,5 +0,0 @@
-package dev.hossain.timeline
-
-fun main() {
-  println("Main function from parser module.")
-}
diff --git a/parser/src/main/kotlin/Parser.kt b/parser/src/main/kotlin/Parser.kt
index 1d277ba..13d8b13 100644
--- a/parser/src/main/kotlin/Parser.kt
+++ b/parser/src/main/kotlin/Parser.kt
@@ -2,6 +2,8 @@ package dev.hossain.timeline
 
 import ZonedDateTimeAdapter
 import com.squareup.moshi.Moshi
+import com.squareup.moshi.adapters.EnumJsonAdapter
+import dev.hossain.timeline.model.ActivityType
 import dev.hossain.timeline.model.Records
 import dev.hossain.timeline.model.SemanticTimeline
 import dev.hossain.timeline.model.Settings
@@ -14,6 +16,10 @@ class Parser constructor() {
   private val moshi: Moshi =
     Moshi.Builder()
       .add(ZonedDateTimeAdapter())
+      .add(
+        ActivityType::class.java,
+        EnumJsonAdapter.create(ActivityType::class.java).withUnknownFallback(ActivityType.UNKNOWN),
+      )
       .build()
 
   /**
diff --git a/parser/src/main/kotlin/model/Records.kt b/parser/src/main/kotlin/model/Records.kt
index 26f6727..94df509 100644
--- a/parser/src/main/kotlin/model/Records.kt
+++ b/parser/src/main/kotlin/model/Records.kt
@@ -121,7 +121,7 @@ data class AccessPoint(
   /**
    * Whether the device that scanned the access point is connected to it.
    */
-  val isConnected: Boolean,
+  val isConnected: Boolean?,
 )
 
 /**
@@ -178,26 +178,32 @@ enum class ActivityType(val title: String, val extraColor: String) {
   BOATING("Boating", "#01579b"),
   CATCHING_POKEMON("Catching Pokémon", "#db4437"),
   CYCLING("Cycling", "#4db6ac"),
+  EXITING_VEHICLE("Exiting a vehicle", "#01579b"),
   FLYING("Flying", "#3f51b5"),
   HIKING("Hiking", "#c2185b"),
   HORSEBACK_RIDING("Horseback riding", "#4db6ac"),
   IN_BUS("On a bus", "#01579b"),
   IN_CABLECAR("In a cable car", "#01579b"),
+  IN_CAR("In a car", "#01579b"),
   IN_FERRY("On a ferry", "#01579b"),
+  IN_FOUR_WHEELER_VEHICLE("In a four wheeler vehicle", "#01579b"),
   IN_FUNICULAR("On a funicular", "#01579b"),
   IN_GONDOLA_LIFT("In a gondola lift", "#01579b"),
   IN_PASSENGER_VEHICLE("Driving", "#01579b"),
+  IN_RAIL_VEHICLE("In a rail vehicle", "#01579b"),
+  IN_ROAD_VEHICLE("In a road vehicle", "#03a9f4"),
   IN_SUBWAY("On the subway", "#01579b"),
   IN_TAXI("In a taxi", "#01579b"),
   IN_TRAIN("On a train", "#01579b"),
   IN_TRAM("On a tram", "#01579b"),
+  IN_TWO_WHEELER_VEHICLE("On a two wheeler vehicle", "#01579b"),
   IN_VEHICLE("In a vehicle", "#03a9f4"),
   IN_WHEELCHAIR("By wheelchair", "#03a9f4"),
   KAYAKING("Kayaking", "#4db6ac"),
   KITESURFING("Kitesurfing", "#4db6ac"),
   MOTORCYCLING("Motorcycling", "#01579b"),
-  ON_FOOT("On foot", "#c2185b"),
   ON_BICYCLE("On a bicycle", "#4db6ac"),
+  ON_FOOT("On foot", "#c2185b"),
   PARAGLIDING("Paragliding", "#4db6ac"),
   ROWING("Rowing", "#c2185b"),
   RUNNING("Running", "#c2185b"),
diff --git a/parser/src/test/kotlin/dev/hossain/timeline/model/RecordsTestCopilot.kt b/parser/src/test/kotlin/dev/hossain/timeline/model/RecordsTestCopilot.kt
index ecddc19..2ea6d1d 100644
--- a/parser/src/test/kotlin/dev/hossain/timeline/model/RecordsTestCopilot.kt
+++ b/parser/src/test/kotlin/dev/hossain/timeline/model/RecordsTestCopilot.kt
@@ -75,7 +75,7 @@ class RecordsTestCopilot {
     assertEquals("00:00:00:00:00:00", accessPoint.mac)
     assertEquals(100, accessPoint.strength)
     assertEquals(2400, accessPoint.frequencyMhz)
-    assertTrue(accessPoint.isConnected)
+    assertTrue(accessPoint.isConnected!!)
   }
 
   @Test
diff --git a/sample/src/main/kotlin/Main.kt b/sample/src/main/kotlin/Main.kt
index 10c4c77..7493323 100644
--- a/sample/src/main/kotlin/Main.kt
+++ b/sample/src/main/kotlin/Main.kt
@@ -1,5 +1,14 @@
 package dev.hossain.timeline
 
+import java.io.File
+
 fun main() {
-    println("Sample app for timeline project.")
+  println("Sample app for timeline project.")
+  val parser = Parser()
+  // load "Records.json" file
+  val recordsJson = parser::class.java.classLoader.getResource("Records.json")?.readText()!!
+  val records = parser.parseRecords(recordsJson)
+
+  println("Got records: ${records.locations.size} records.")
+  println()
 }