diff --git a/src/boxes.rs b/src/boxes.rs
new file mode 100644
index 0000000..b424b42
--- /dev/null
+++ b/src/boxes.rs
@@ -0,0 +1,57 @@
+use std::fmt::Display;
+use serde::{Serialize, Deserialize};
+
+#[derive(Debug, Clone, Copy)]
+pub struct BoxCoords {
+    pub id: u32,
+    pub x1: u32,
+    pub y1: u32,
+    pub x2: u32,
+    pub y2: u32,
+}
+
+impl Display for BoxCoords {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "Absolute Box {}, x1: {}, y1: {}, x2: {}, y2: {}",
+            self.id, self.x1, self.y1, self.x2, self.y2
+        )
+    }
+}
+
+
+#[derive(Serialize, Deserialize, Debug, Clone, Copy)]
+pub struct NormalizedBoxCoords {
+    pub id: u32,
+    pub x1: f32,
+    pub y1: f32,
+    pub x2: f32,
+    pub y2: f32,
+}
+
+impl NormalizedBoxCoords {
+    fn absolute_coords(&self, width: i32, height: i32) -> BoxCoords {
+        BoxCoords {
+            id: self.id,
+            x1: (self.x1 * width as f32) as u32,
+            y1: (self.y1 * height as f32) as u32,
+            x2: (self.x2 * width as f32) as u32,
+            y2: (self.y2 * height as f32) as u32,
+        }
+    }
+
+    fn area(&self) -> f32 {
+        (self.x2 - self.x1) * (self.y2 - self.y1)
+    }
+}
+
+impl Display for NormalizedBoxCoords {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "Normalized Box {}, x1: {}, y1: {}, x2: {}, y2: {}",
+            self.id, self.x1, self.y1, self.x2, self.y2
+        )
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 538dabe..760260a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,6 +14,13 @@ use tracing::{error, info, debug, instrument};
 use webrtc::peer_connection::sdp::session_description::RTCSessionDescription;
 use webrtc::ice_transport::ice_candidate::{RTCIceCandidate, RTCIceCandidateInit};
 
+mod boxes;
+use boxes::NormalizedBoxCoords;
+
+pub mod types {
+    pub use crate::boxes::NormalizedBoxCoords;
+}
+
 static MAX_MESSAGE: usize = 50;
 
 /// Standardized messages that can be sent between the controller
@@ -23,6 +30,11 @@ pub enum ApplicationMessage {
     /// Ask for the satellite's name. If it is None, it is a name request 
     /// if it is Some, it is a response to a name request
     NameRequest(Option<String>),
+
+    ChangeTrackingID(u16),
+    TrackingBoxes(Vec<NormalizedBoxCoords>),
+    ManualMovementOverride((i32, i32)),
+
     WebRTCPacket(RTCSessionDescription),
     WebRTCIceCandidate(RTCIceCandidate),
     WebRTCIceCandidateInit(RTCIceCandidateInit),