diff --git a/examples/leptos-actix/src/home.rs b/examples/leptos-actix/src/home.rs
index 1ff4e47..f304ac3 100644
--- a/examples/leptos-actix/src/home.rs
+++ b/examples/leptos-actix/src/home.rs
@@ -20,7 +20,7 @@ pub fn HomePage() -> impl IntoView {
             {move || Suspend::new(async move { match user.await {
                 Ok(user) => Either::Left(match user {
                     Some(user) => Either::Left(view! {
-                        {user.id}
+                        <p><b>User ID:</b> {user.id}</p>
 
                         <A href="/auth/sign-out">
                             <button>"Sign out"</button>
diff --git a/examples/leptos-axum/src/home.rs b/examples/leptos-axum/src/home.rs
index 3119eb6..1aeb617 100644
--- a/examples/leptos-axum/src/home.rs
+++ b/examples/leptos-axum/src/home.rs
@@ -20,7 +20,7 @@ pub fn HomePage() -> impl IntoView {
             {move || Suspend::new(async move { match user.await {
                 Ok(user) => Either::Left(match user {
                     Some(user) => Either::Left(view! {
-                        {user.id}
+                        <p><b>User ID:</b> {user.id}</p>
 
                         <A href="/auth/sign-out">
                             <button>"Sign out"</button>
diff --git a/packages/core/shield/src/session.rs b/packages/core/shield/src/session.rs
index 689aa7e..0a7dd3d 100644
--- a/packages/core/shield/src/session.rs
+++ b/packages/core/shield/src/session.rs
@@ -43,10 +43,18 @@ impl Session {
 
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
 pub struct SessionData {
-    pub user_id: Option<String>,
+    pub authentication: Option<Authentication>,
 
-    // TODO: allow arbitrary data to be stored by providers?
+    // TODO: Allow arbitrary data to be stored by providers?
     pub csrf: Option<String>,
     pub nonce: Option<String>,
     pub verifier: Option<String>,
+    pub oidc_connection_id: Option<String>,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+pub struct Authentication {
+    pub provider_id: String,
+    pub subprovider_id: Option<String>,
+    pub user_id: String,
 }
diff --git a/packages/core/shield/src/shield.rs b/packages/core/shield/src/shield.rs
index b547e34..5604aa9 100644
--- a/packages/core/shield/src/shield.rs
+++ b/packages/core/shield/src/shield.rs
@@ -4,7 +4,7 @@ use futures::future::try_join_all;
 use tracing::debug;
 
 use crate::{
-    error::{ProviderError, ShieldError},
+    error::{ProviderError, SessionError, ShieldError},
     provider::{Provider, Subprovider, SubproviderVisualisation},
     request::{SignInCallbackRequest, SignInRequest, SignOutRequest},
     response::Response,
@@ -107,19 +107,39 @@ impl<U: User> Shield<U> {
         provider.sign_in_callback(request, session).await
     }
 
-    pub async fn sign_out(
-        &self,
-        request: SignOutRequest,
-        session: Session,
-    ) -> Result<Response, ShieldError> {
-        debug!("sign out {:?}", request);
+    pub async fn sign_out(&self, session: Session) -> Result<Response, ShieldError> {
+        debug!("sign out");
 
-        let provider = match self.providers.get(&request.provider_id) {
-            Some(provider) => provider,
-            None => return Err(ProviderError::ProviderNotFound(request.provider_id).into()),
+        let authenticated = {
+            let session_data = session.data();
+            let session_data = session_data
+                .lock()
+                .map_err(|err| SessionError::Lock(err.to_string()))?;
+
+            session_data.authentication.clone()
         };
 
-        let response = provider.sign_out(request, session.clone()).await?;
+        let response = if let Some(authenticated) = authenticated {
+            let provider = match self.providers.get(&authenticated.provider_id) {
+                Some(provider) => provider,
+                None => {
+                    return Err(ProviderError::ProviderNotFound(authenticated.provider_id).into())
+                }
+            };
+
+            provider
+                .sign_out(
+                    SignOutRequest {
+                        provider_id: authenticated.provider_id,
+                        subprovider_id: authenticated.subprovider_id,
+                    },
+                    session.clone(),
+                )
+                .await?
+        } else {
+            // TODO: Should be configurable.
+            Response::Redirect("/".to_owned())
+        };
 
         session.purge().await?;
 
diff --git a/packages/core/shield/src/shield_dyn.rs b/packages/core/shield/src/shield_dyn.rs
index dc8e9b6..49c4a0f 100644
--- a/packages/core/shield/src/shield_dyn.rs
+++ b/packages/core/shield/src/shield_dyn.rs
@@ -5,7 +5,7 @@ use async_trait::async_trait;
 use crate::{
     error::ShieldError,
     provider::{Subprovider, SubproviderVisualisation},
-    request::{SignInCallbackRequest, SignInRequest, SignOutRequest},
+    request::{SignInCallbackRequest, SignInRequest},
     response::Response,
     session::Session,
     shield::Shield,
@@ -32,11 +32,7 @@ pub trait DynShield: Send + Sync {
         session: Session,
     ) -> Result<Response, ShieldError>;
 
-    async fn sign_out(
-        &self,
-        request: SignOutRequest,
-        session: Session,
-    ) -> Result<Response, ShieldError>;
+    async fn sign_out(&self, session: Session) -> Result<Response, ShieldError>;
 }
 
 #[async_trait]
@@ -67,12 +63,8 @@ impl<U: User> DynShield for Shield<U> {
         self.sign_in_callback(request, session).await
     }
 
-    async fn sign_out(
-        &self,
-        request: SignOutRequest,
-        session: Session,
-    ) -> Result<Response, ShieldError> {
-        self.sign_out(request, session).await
+    async fn sign_out(&self, session: Session) -> Result<Response, ShieldError> {
+        self.sign_out(session).await
     }
 }
 
@@ -109,11 +101,7 @@ impl ShieldDyn {
         self.0.sign_in_callback(request, session).await
     }
 
-    pub async fn sign_out(
-        &self,
-        request: SignOutRequest,
-        session: Session,
-    ) -> Result<Response, ShieldError> {
-        self.0.sign_out(request, session).await
+    pub async fn sign_out(&self, session: Session) -> Result<Response, ShieldError> {
+        self.0.sign_out(session).await
     }
 }
diff --git a/packages/integrations/shield-leptos/src/routes/sign_out.rs b/packages/integrations/shield-leptos/src/routes/sign_out.rs
index a6eea0a..11ab8e3 100644
--- a/packages/integrations/shield-leptos/src/routes/sign_out.rs
+++ b/packages/integrations/shield-leptos/src/routes/sign_out.rs
@@ -1,11 +1,8 @@
 use leptos::prelude::*;
 
 #[server]
-pub async fn sign_out(
-    provider_id: String,
-    subprovider_id: Option<String>,
-) -> Result<(), ServerFnError> {
-    use shield::{Response, ShieldError, SignOutRequest};
+pub async fn sign_out() -> Result<(), ServerFnError> {
+    use shield::{Response, ShieldError};
 
     use crate::context::expect_server_integration;
 
@@ -14,13 +11,7 @@ pub async fn sign_out(
     let session = server_integration.extract_session().await;
 
     let response = shield
-        .sign_out(
-            SignOutRequest {
-                provider_id,
-                subprovider_id,
-            },
-            session,
-        )
+        .sign_out(session)
         .await
         .map_err(ServerFnError::<ShieldError>::from)?;
 
@@ -41,9 +32,6 @@ pub fn SignOut() -> impl IntoView {
         <h1>"Sign out"</h1>
 
         <ActionForm action=sign_out>
-            // <input name="provider_id" type="hidden" value=subprovider.provider_id />
-            // <input name="subprovider_id" type="hidden" value=subprovider.subprovider_id />
-
             <button type="submit">"Sign out"</button>
         </ActionForm>
     }
diff --git a/packages/integrations/shield-tower/src/service.rs b/packages/integrations/shield-tower/src/service.rs
index b453c83..7b8a684 100644
--- a/packages/integrations/shield-tower/src/service.rs
+++ b/packages/integrations/shield-tower/src/service.rs
@@ -75,13 +75,15 @@ where
                 };
             let shield_session = Session::new(session_storage);
 
-            let user_id = match shield_session.data().lock() {
-                Ok(session) => session.user_id.clone(),
+            let authenticated = match shield_session.data().lock() {
+                Ok(session) => session.authentication.clone(),
                 Err(_err) => return Ok(Self::internal_server_error()),
             };
 
-            let user = if let Some(user_id) = user_id {
-                match shield.storage().user_by_id(&user_id).await {
+            let user = if let Some(authenticated) = authenticated {
+                // TODO: Verify provider and subprovider still exist.
+
+                match shield.storage().user_by_id(&authenticated.user_id).await {
                     Ok(user) => {
                         if user.is_none() {
                             if let Err(_err) = shield_session.purge().await {
diff --git a/packages/providers/shield-oidc/src/provider.rs b/packages/providers/shield-oidc/src/provider.rs
index b38aaf3..51f24d0 100644
--- a/packages/providers/shield-oidc/src/provider.rs
+++ b/packages/providers/shield-oidc/src/provider.rs
@@ -7,9 +7,9 @@ use openidconnect::{
     PkceCodeChallenge, PkceCodeVerifier, Scope, TokenResponse, UserInfoClaims,
 };
 use shield::{
-    ConfigurationError, CreateEmailAddress, CreateUser, Provider, ProviderError, Response, Session,
-    SessionError, ShieldError, SignInCallbackRequest, SignInRequest, SignOutRequest, Subprovider,
-    UpdateUser, User,
+    Authentication, ConfigurationError, CreateEmailAddress, CreateUser, Provider, ProviderError,
+    Response, Session, SessionError, ShieldError, SignInCallbackRequest, SignInRequest,
+    SignOutRequest, Subprovider, UpdateUser, User,
 };
 use tracing::debug;
 
@@ -341,7 +341,7 @@ impl<U: User> Provider for OidcProvider<U> {
 
                 let connection = self
                     .create_oidc_connection(
-                        subprovider.id,
+                        subprovider.id.clone(),
                         user.id(),
                         claims.subject().to_string(),
                         token_response,
@@ -352,6 +352,8 @@ impl<U: User> Provider for OidcProvider<U> {
             }
         };
 
+        debug!("signed in {:?} {:?}", user.id(), connection);
+
         session.renew().await?;
 
         {
@@ -360,13 +362,20 @@ impl<U: User> Provider for OidcProvider<U> {
                 .lock()
                 .map_err(|err| SessionError::Lock(err.to_string()))?;
 
-            session_data.user_id = Some(user.id());
+            session_data.csrf = None;
+            session_data.nonce = None;
+            session_data.verifier = None;
+
+            session_data.authentication = Some(Authentication {
+                provider_id: self.id(),
+                subprovider_id: Some(subprovider.id),
+                user_id: user.id(),
+            });
+            session_data.oidc_connection_id = Some(connection.id);
         }
 
         session.update().await?;
 
-        debug!("signed in {:?} {:?}", user.id(), connection);
-
         // TODO: Should be configurable.
         Ok(Response::Redirect("/".to_owned()))
     }
@@ -381,25 +390,37 @@ impl<U: User> Provider for OidcProvider<U> {
             None => return Err(ProviderError::SubproviderMissing.into()),
         };
 
-        // TODO: find access token
-        let token = AccessToken::new("".to_owned());
-
-        let client = subprovider.oidc_client().await?;
+        let connection_id = {
+            let session_data = session.data();
+            let session_data = session_data
+                .lock()
+                .map_err(|err| SessionError::Lock(err.to_string()))?;
 
-        let revocation_request = match client.revoke_token(token.into()) {
-            Ok(revocation_request) => Some(revocation_request),
-            Err(openidconnect::ConfigurationError::MissingUrl("revocation")) => None,
-            Err(err) => return Err(ConfigurationError::Invalid(err.to_string()).into()),
+            session_data.oidc_connection_id.clone()
         };
 
-        if let Some(revocation_request) = revocation_request {
-            revocation_request
-                .request_async(async_http_client)
-                .await
-                .expect("TODO: revocation request error");
-        }
+        if let Some(connection_id) = connection_id {
+            if let Some(connection) = self.storage.oidc_connection_by_id(&connection_id).await? {
+                debug!("revoking access token {:?}", connection.access_token);
+
+                let token = AccessToken::new(connection.access_token);
 
-        session.purge().await?;
+                let client = subprovider.oidc_client().await?;
+
+                let revocation_request = match client.revoke_token(token.into()) {
+                    Ok(revocation_request) => Some(revocation_request),
+                    Err(openidconnect::ConfigurationError::MissingUrl("revocation")) => None,
+                    Err(err) => return Err(ConfigurationError::Invalid(err.to_string()).into()),
+                };
+
+                if let Some(revocation_request) = revocation_request {
+                    revocation_request
+                        .request_async(async_http_client)
+                        .await
+                        .map_err(|err| ShieldError::Request(err.to_string()))?;
+                }
+            }
+        }
 
         // TODO: Should be configurable.
         Ok(Response::Redirect("/".to_owned()))
diff --git a/packages/providers/shield-oidc/src/storage.rs b/packages/providers/shield-oidc/src/storage.rs
index 55bc921..a55e0b1 100644
--- a/packages/providers/shield-oidc/src/storage.rs
+++ b/packages/providers/shield-oidc/src/storage.rs
@@ -16,6 +16,11 @@ pub trait OidcStorage<U: User>: Storage<U> + Sync {
         subprovider_id: &str,
     ) -> Result<Option<OidcSubprovider>, StorageError>;
 
+    async fn oidc_connection_by_id(
+        &self,
+        connection_id: &str,
+    ) -> Result<Option<OidcConnection>, StorageError>;
+
     async fn oidc_connection_by_identifier(
         &self,
         subprovider_id: &str,
diff --git a/packages/storage/shield-memory/src/providers/oidc.rs b/packages/storage/shield-memory/src/providers/oidc.rs
index 8d40e02..fcffd7d 100644
--- a/packages/storage/shield-memory/src/providers/oidc.rs
+++ b/packages/storage/shield-memory/src/providers/oidc.rs
@@ -27,6 +27,20 @@ impl OidcStorage<User> for MemoryStorage {
         Ok(None)
     }
 
+    async fn oidc_connection_by_id(
+        &self,
+        connection_id: &str,
+    ) -> Result<Option<OidcConnection>, StorageError> {
+        Ok(self
+            .oidc
+            .connections
+            .lock()
+            .map_err(|err| StorageError::Engine(err.to_string()))?
+            .iter()
+            .find(|connection| connection.id == connection_id)
+            .cloned())
+    }
+
     async fn oidc_connection_by_identifier(
         &self,
         subprovider_id: &str,
diff --git a/packages/storage/shield-sea-orm/src/providers/oidc.rs b/packages/storage/shield-sea-orm/src/providers/oidc.rs
index d915727..29499e4 100644
--- a/packages/storage/shield-sea-orm/src/providers/oidc.rs
+++ b/packages/storage/shield-sea-orm/src/providers/oidc.rs
@@ -40,6 +40,17 @@ impl OidcStorage<user::Model> for SeaOrmStorage {
             })
     }
 
+    async fn oidc_connection_by_id(
+        &self,
+        connection_id: &str,
+    ) -> Result<Option<OidcConnection>, StorageError> {
+        oidc_provider_connection::Entity::find_by_id(Self::parse_uuid(connection_id)?)
+            .one(&self.database)
+            .await
+            .map_err(|err| StorageError::Engine(err.to_string()))
+            .map(|connection| connection.map(OidcConnection::from))
+    }
+
     async fn oidc_connection_by_identifier(
         &self,
         subprovider_id: &str,