diff --git a/src/rustylee/src/child_identity.rs b/src/rustylee/src/child_identity.rs
new file mode 100644
index 0000000..3dadd56
--- /dev/null
+++ b/src/rustylee/src/child_identity.rs
@@ -0,0 +1,14 @@
+#[derive(Debug, Clone, Copy)]
+pub struct ChildIdentity {
+    id: u32,
+    parent_id: u32,
+}
+
+impl ChildIdentity {
+    pub fn new(id: u32, parent_id: u32) -> Self {
+        Self {
+            id,
+            parent_id
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/rustylee/src/macros/identifiable.rs b/src/rustylee/src/macros/identifiable.rs
index 61ded7f..87b815e 100644
--- a/src/rustylee/src/macros/identifiable.rs
+++ b/src/rustylee/src/macros/identifiable.rs
@@ -2,8 +2,8 @@
 macro_rules! impl_identifiable {
     ($target:ident, { $($body:tt)* }) => {
         impl Parenchyma for $target {
-            fn id(&self) -> u32 {
-                self.id
+            fn identity(&self) -> child_identity::ChildIdentity {
+                self.identity
             }
 
             $($body)*
diff --git a/src/rustylee/src/main.rs b/src/rustylee/src/main.rs
index 6d9821f..6480059 100644
--- a/src/rustylee/src/main.rs
+++ b/src/rustylee/src/main.rs
@@ -5,6 +5,7 @@ pub mod coordinates;
 pub mod protocols;
 pub mod system;
 pub mod macros;
+pub mod child_identity;
 
 use std::fmt::Alignment::Left;
 use tracing::{debug, info};
diff --git a/src/rustylee/src/organs/led_pump.rs b/src/rustylee/src/organs/led_pump.rs
index e72b696..cdb53b0 100644
--- a/src/rustylee/src/organs/led_pump.rs
+++ b/src/rustylee/src/organs/led_pump.rs
@@ -1,16 +1,22 @@
-use crate::impl_identifiable;
+use crate::child_identity::ChildIdentity;
 use crate::organs::parenchyma::Parenchyma;
 use crate::protocols::{OrganCommand, OrganCommandEnvelope, OrganResponse};
-
+use crate::system::time::Time;
+use crate::{child_identity, impl_identifiable};
+use tracing::{info};
 pub struct LedPump {
-    id: u32,
-    parent_organ_id: u32,
+    identity: child_identity::ChildIdentity,
     last_beat: u64,
 }
 
 impl_identifiable!(LedPump, {
     fn do_work(&mut self, _envelope: OrganCommandEnvelope) -> OrganResponse {
         // Your logic here
+        let now = Time::time_stamp_millis();
+        if now > self.last_beat + 500 {
+            info!("LED Pump heart beat at {} {:?}", now, self.identity);
+            self.last_beat = now;
+        }
         OrganResponse::Ok
     }
 
@@ -22,9 +28,8 @@ impl_identifiable!(LedPump, {
 impl LedPump {
     pub fn new(id: u32, parent_organ_id: u32) -> Self {
         Self {
-            id,
-            parent_organ_id,
-            last_beat: 0
+            identity: ChildIdentity::new(id, parent_organ_id),
+            last_beat: 0,
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/rustylee/src/organs/parenchyma.rs b/src/rustylee/src/organs/parenchyma.rs
index b223568..bfa26a7 100644
--- a/src/rustylee/src/organs/parenchyma.rs
+++ b/src/rustylee/src/organs/parenchyma.rs
@@ -1,13 +1,15 @@
+use crate::child_identity::ChildIdentity;
+use crate::protocols::{OrganCommand, OrganCommandEnvelope, OrganResponse};
 
 /*
     Parenchyma: The essential and distinctive functional tissue of an organ,
     as distinguished from its connective tissue, blood vessels,
     and nerves (the stroma)
  */
-use crate::protocols::{OrganCommand, OrganCommandEnvelope, OrganResponse};
-
 pub trait Parenchyma: Send {
-    fn id(&self) -> u32;
+    fn identity(&self) -> ChildIdentity;
+
     fn do_work (&mut self, command_envelope: OrganCommandEnvelope) -> OrganResponse;
+
     fn get_supported_commands(&self) -> Vec<OrganCommand>;
 }
\ No newline at end of file