diff --git a/Cargo.toml b/Cargo.toml
index 6f1246a..1f6baeb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,8 +21,12 @@ redis = { version = "0.7.0", optional = true }
 r2d2_redis = { version = "0.5.0", optional = true }
 r2d2 = { version = "0.7.1", optional = true }
 
+serde = { version = "1.0", optional = true }
+serde_json = { version = "1.0", optional = true }
+
 [features]
 redis-backend = ["redis", "r2d2_redis", "r2d2"]
+serde-values = ["serde", "serde_json"]
 
 [dev-dependencies]
 router = "0.5.0"
diff --git a/src/lib.rs b/src/lib.rs
index 16ff3de..56ef675 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,6 +6,8 @@ extern crate rand;
 #[cfg(feature = "redis-backend")] extern crate redis;
 #[cfg(feature = "redis-backend")] extern crate r2d2;
 #[cfg(feature = "redis-backend")] extern crate r2d2_redis;
+#[cfg(feature = "serde-values")] extern crate serde;
+#[cfg(feature = "serde-values")] extern crate serde_json;
 
 use iron::prelude::*;
 use iron::middleware::{AroundMiddleware,Handler};
@@ -79,6 +81,27 @@ pub trait Value: Sized + 'static {
     fn from_raw(value: String) -> Option<Self>;
 }
 
+pub trait Key {
+    fn get_key() -> &'static str;
+}
+
+#[cfg(feature = "serde-values")]
+impl<T> Value for T
+where
+    T: 'static + Key + serde::Serialize + serde::de::DeserializeOwned,
+{
+    fn get_key() -> &'static str {
+        Self::get_key()
+    }
+    fn into_raw(self) -> String {
+        serde_json::to_string(&self).expect("serializing self must not fail")
+    }
+    fn from_raw(value: String) -> Option<Self> {
+        serde_json::from_str(&value).ok()
+    }
+}
+
+
 impl Session {
     /// Get a `Value` from the session.
     pub fn get<T: Value + Sized + 'static>(&self) -> IronResult<Option<T>> {