diff --git a/src/main.rs b/src/main.rs
index 4557a6d..0ea6818 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,6 +3,17 @@ use bluer::{self, monitor::Monitor};
 use anyhow::Result;
 use futures::StreamExt;
 
+struct Data {
+    /// Temperature in °C
+    temperature: f32,
+
+    /// Humidity in %
+    humidity: f32,
+
+    /// CO2 in parts per million
+    co2: f32,
+}
+
 #[tokio::main(flavor="current_thread")]
 async fn main() -> Result<()> {