diff --git a/src/identity/application/services/login/command.rs b/src/identity/application/services/login/command.rs
index 8b13789..0b2540e 100644
--- a/src/identity/application/services/login/command.rs
+++ b/src/identity/application/services/login/command.rs
@@ -1 +1,39 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
 
+use derive_getters::Getters;
+use serde::{Deserialize, Serialize};
+
+use super::*;
+
+#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
+pub struct LoginCommand {
+    success: bool,
+}
+
+impl LoginCommand {
+    pub fn new(_username: String, supplied_password: String, actual_password_hash: &str) -> IdentityCommandResult<Self> {
+        let success =
+            argon2_creds::Config::verify(actual_password_hash, &supplied_password)?;
+        Ok(Self { success })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_cmd() {
+        let config = argon2_creds::Config::default();
+        let password = "adsfasdfasd";
+        let hashed_password = config.password(password).unwrap();
+        assert!(
+            LoginCommand::new("realaravinth".into(), password.into(), &hashed_password,).unwrap().success
+        );
+        assert!(
+            !LoginCommand::new("realaravinth".into(), "password".into(), &hashed_password,).unwrap().success
+        );
+    }
+}
diff --git a/src/identity/application/services/login/error.rs b/src/identity/application/services/login/error.rs
deleted file mode 100644
index 8b13789..0000000
--- a/src/identity/application/services/login/error.rs
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/src/identity/application/services/login/events.rs b/src/identity/application/services/login/events.rs
new file mode 100644
index 0000000..84b0b25
--- /dev/null
+++ b/src/identity/application/services/login/events.rs
@@ -0,0 +1,17 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use derive_getters::Getters;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Getters)]
+pub struct LoginEvent {
+    success: bool,
+}
+
+impl LoginEvent {
+    pub fn new(success: bool) -> Self {
+        Self { success }
+    }
+}
diff --git a/src/identity/application/services/login/mod.rs b/src/identity/application/services/login/mod.rs
index 0d0d0f7..20dc2ba 100644
--- a/src/identity/application/services/login/mod.rs
+++ b/src/identity/application/services/login/mod.rs
@@ -1,3 +1,18 @@
-mod command;
-mod error;
-mod service;
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+pub mod command;
+pub mod events;
+pub mod service;
+
+use super::errors::*;
+
+#[async_trait::async_trait]
+pub trait LoginUseCase {
+    async fn login(
+        &self,
+        cmd: command::LoginCommand,
+        //) -> errors::ProcessAuthorizationServiceResult<String>;
+    ) -> events::LoginEvent;
+}
diff --git a/src/identity/application/services/login/service.rs b/src/identity/application/services/login/service.rs
index 8b13789..091183a 100644
--- a/src/identity/application/services/login/service.rs
+++ b/src/identity/application/services/login/service.rs
@@ -1 +1,48 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
 
+use super::*;
+
+pub struct LoginService;
+
+#[async_trait::async_trait]
+impl LoginUseCase for LoginService {
+    async fn login(
+        &self,
+        cmd: command::LoginCommand,
+        //) -> errors::ProcessAuthorizationServiceResult<String>;
+    ) ->  events::LoginEvent {
+        events::LoginEvent::new(cmd.success().to_owned())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[actix_rt::test]
+    async fn test_service() {
+        let config = argon2_creds::Config::default();
+        let username = "realaravinth";
+        let password = "password";
+        let hashed_password = config.password(password).unwrap();
+
+        let s = LoginService;
+
+        {
+            let cmd =
+                command::LoginCommand::new(username.into(), password.into(), &hashed_password).unwrap();
+            let res = s.login(cmd.clone()).await;
+            assert_eq!(res.success(), cmd.success());
+        }
+
+        {
+            // success=false:
+            let cmd =
+                command::LoginCommand::new(username.into(), "asdfasdf".into(), &hashed_password).unwrap();
+            let res = s.login(cmd.clone()).await;
+            assert_eq!(res.success(), cmd.success());
+        }
+    }
+}