diff --git a/test/accounts/password_email_identification_test.exs b/test/accounts/password_email_identification_test.exs
new file mode 100644
index 0000000..db93187
--- /dev/null
+++ b/test/accounts/password_email_identification_test.exs
@@ -0,0 +1,80 @@
+defmodule Mv.Accounts.PasswordEmailIdentificationTest do
+  use Mv.DataCase, async: true
+
+  describe "Password Email Identification" do
+    test "user can sign in with email and password" do
+      # Get the password strategy
+      strategy = AshAuthentication.Info.strategy!(Mv.Accounts.User, :password)
+
+      # Create a user with password
+      {:ok, user} =
+        AshAuthentication.Strategy.action(strategy, :register, %{
+          "email" => "test@example.com",
+          "password" => "password123"
+        })
+
+      # Sign in with email
+      {:ok, signed_in_user} =
+        AshAuthentication.Strategy.action(strategy, :sign_in, %{
+          "email" => "test@example.com",
+          "password" => "password123"
+        })
+
+      assert signed_in_user.id == user.id
+      assert to_string(signed_in_user.email) == "test@example.com"
+    end
+
+    test "sign in fails with wrong password" do
+      # Get the password strategy
+      strategy = AshAuthentication.Info.strategy!(Mv.Accounts.User, :password)
+
+      # Create a user with password
+      {:ok, _user} =
+        AshAuthentication.Strategy.action(strategy, :register, %{
+          "email" => "test2@example.com",
+          "password" => "password123"
+        })
+
+      # Try to sign in with wrong password
+      {:error, _} =
+        AshAuthentication.Strategy.action(strategy, :sign_in, %{
+          "email" => "test2@example.com",
+          "password" => "wrongpassword"
+        })
+    end
+
+    test "sign in fails with non-existent email" do
+      # Get the password strategy
+      strategy = AshAuthentication.Info.strategy!(Mv.Accounts.User, :password)
+
+      # Try to sign in with non-existent email
+      {:error, _} =
+        AshAuthentication.Strategy.action(strategy, :sign_in, %{
+          "email" => "nonexistent@example.com",
+          "password" => "password123"
+        })
+    end
+
+    test "user gets member automatically created during registration" do
+      # Get the password strategy
+      strategy = AshAuthentication.Info.strategy!(Mv.Accounts.User, :password)
+
+      # Register a user
+      {:ok, user} =
+        AshAuthentication.Strategy.action(strategy, :register, %{
+          "email" => "member@example.com",
+          "password" => "password123"
+        })
+
+      # Reload user to get member_id
+      user = Ash.reload!(user, domain: Mv.Accounts)
+
+      # User should have a member
+      assert user.member_id
+
+      # Member should have the same email
+      member = Ash.get!(Mv.Membership.Member, user.member_id, domain: Mv.Membership)
+      assert member.member_email == "member@example.com"
+    end
+  end
+end