diff --git a/tauri/src-tauri/Cargo.lock b/tauri/src-tauri/Cargo.lock
index 40523e3..16adbcb 100644
--- a/tauri/src-tauri/Cargo.lock
+++ b/tauri/src-tauri/Cargo.lock
@@ -47,6 +47,18 @@ version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
 
+[[package]]
+name = "argon2"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c3610892ee6e0cbce8ae2700349fcf8f98adb0dbfbee85aec3c9179d29cc072"
+dependencies = [
+ "base64ct",
+ "blake2",
+ "cpufeatures",
+ "password-hash",
+]
+
 [[package]]
 name = "async-broadcast"
 version = "0.7.2"
@@ -225,6 +237,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "base64ct"
+version = "1.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2af50177e190e07a26ab74f8b1efbfe2ef87da2116221318cb1c2e82baf7de06"
+
 [[package]]
 name = "battery"
 version = "0.7.8"
@@ -272,6 +290,15 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "blake2"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46502ad458c9a52b69d4d4d32775c788b7a1b85e8bc9d482d92250fc0e3f8efe"
+dependencies = [
+ "digest",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -733,6 +760,16 @@ checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer",
  "crypto-common",
+ "subtle",
+]
+
+[[package]]
+name = "dirs"
+version = "5.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c45a9d03d6676652bcb5e724c7e988de1acad23a711b5217ab9cbecbec2225"
+dependencies = [
+ "dirs-sys 0.4.1",
 ]
 
 [[package]]
@@ -741,7 +778,19 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
 dependencies = [
- "dirs-sys",
+ "dirs-sys 0.5.0",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users 0.4.6",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -752,7 +801,7 @@ checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
 dependencies = [
  "libc",
  "option-ext",
- "redox_users",
+ "redox_users 0.5.2",
  "windows-sys 0.61.2",
 ]
 
@@ -2449,6 +2498,17 @@ dependencies = [
  "windows-link 0.2.1",
 ]
 
+[[package]]
+name = "password-hash"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "346f04948ba92c43e8469c1ee6736c7563d71012b17d40745260fe106aac2166"
+dependencies = [
+ "base64ct",
+ "rand_core",
+ "subtle",
+]
+
 [[package]]
 name = "pathdiff"
 version = "0.2.3"
@@ -2713,6 +2773,15 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom 0.2.17",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"
@@ -2728,6 +2797,17 @@ dependencies = [
  "bitflags 2.13.0",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom 0.2.17",
+ "libredox",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "redox_users"
 version = "0.5.2"
@@ -3254,6 +3334,12 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
+[[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
 [[package]]
 name = "swift-rs"
 version = "1.0.7"
@@ -3385,7 +3471,7 @@ dependencies = [
  "anyhow",
  "bytes",
  "cookie",
- "dirs",
+ "dirs 6.0.0",
  "dunce",
  "embed_plist",
  "getrandom 0.3.4",
@@ -3435,7 +3521,7 @@ checksum = "4aa1f9055fc23919a54e4e125052bed16ed04aef0487086e758fe01a67b451c7"
 dependencies = [
  "anyhow",
  "cargo_toml",
- "dirs",
+ "dirs 6.0.0",
  "glob",
  "heck 0.5.0",
  "json-patch",
@@ -3976,7 +4062,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "15edbb0d80583e85ee8df283410038e17314df5cba30da2087a54a85216c0773"
 dependencies = [
  "crossbeam-channel",
- "dirs",
+ "dirs 6.0.0",
  "libappindicator",
  "muda",
  "objc2",
@@ -4419,10 +4505,13 @@ dependencies = [
 
 [[package]]
 name = "win12-desktop"
-version = "0.1.0"
+version = "0.1.2"
 dependencies = [
+ "argon2",
  "battery",
+ "dirs 5.0.1",
  "network-interface",
+ "rand_core",
  "serde",
  "serde_json",
  "tauri",
@@ -4624,6 +4713,15 @@ dependencies = [
  "windows-targets 0.42.2",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
@@ -4657,6 +4755,21 @@ dependencies = [
  "windows_x86_64_msvc 0.42.2",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"
@@ -4697,6 +4810,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
@@ -4709,6 +4828,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
@@ -4721,6 +4846,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -4739,6 +4870,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
@@ -4751,6 +4888,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
@@ -4763,6 +4906,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
@@ -4775,6 +4924,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
@@ -4925,7 +5080,7 @@ dependencies = [
  "block2",
  "cookie",
  "crossbeam-channel",
- "dirs",
+ "dirs 6.0.0",
  "dom_query",
  "dpi",
  "dunce",
diff --git a/tauri/src-tauri/Cargo.toml b/tauri/src-tauri/Cargo.toml
index 17d8d3d..6167b07 100644
--- a/tauri/src-tauri/Cargo.toml
+++ b/tauri/src-tauri/Cargo.toml
@@ -24,3 +24,6 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 battery = "0.7"
 network-interface = "2"
+argon2 = "0.5"
+dirs = "5"
+rand_core = { version = "0.6", features = ["getrandom"] }
diff --git a/tauri/src-tauri/src/lib.rs b/tauri/src-tauri/src/lib.rs
index 410dea2..4e7edea 100644
--- a/tauri/src-tauri/src/lib.rs
+++ b/tauri/src-tauri/src/lib.rs
@@ -1,5 +1,11 @@
+use argon2::{
+    password_hash::{PasswordHash, PasswordHasher, PasswordVerifier, SaltString},
+    Argon2,
+};
 use network_interface::{NetworkInterface, NetworkInterfaceConfig};
+use rand_core::OsRng;
 use serde::Serialize;
+use std::{fs, path::PathBuf};
 
 #[derive(Serialize)]
 struct BatteryInfo {
@@ -15,6 +21,87 @@ struct NetworkInfo {
     name: String,
 }
 
+#[derive(Serialize)]
+struct PasswordStatus {
+    has_password: bool,
+}
+
+#[derive(Serialize)]
+struct LoginResult {
+    ok: bool,
+}
+
+fn password_hash_path() -> Result<PathBuf, String> {
+    let data_dir = dirs::data_dir().ok_or("Cannot find user data directory")?;
+    Ok(data_dir.join("win12-desktop").join("password.hash"))
+}
+
+#[tauri::command]
+fn get_login_password_status() -> Result<PasswordStatus, String> {
+    Ok(PasswordStatus {
+        has_password: password_hash_path()?.exists(),
+    })
+}
+
+#[tauri::command]
+fn verify_login_password(password: String) -> Result<LoginResult, String> {
+    if password.is_empty() {
+        return Err("Password cannot be empty".to_string());
+    }
+
+    let path = password_hash_path()?;
+
+    if !path.exists() {
+        return Ok(LoginResult { ok: true });
+    }
+
+    let hash = fs::read_to_string(&path).map_err(|e| e.to_string())?;
+    let parsed_hash = PasswordHash::new(hash.trim()).map_err(|e| e.to_string())?;
+    let ok = Argon2::default()
+        .verify_password(password.as_bytes(), &parsed_hash)
+        .is_ok();
+
+    Ok(LoginResult { ok })
+}
+
+#[tauri::command]
+fn set_login_password(
+    current_password: Option<String>,
+    new_password: String,
+) -> Result<(), String> {
+    let path = password_hash_path()?;
+    let has_password = path.exists();
+
+    if has_password {
+        let current_password =
+            current_password.ok_or("Current password is required".to_string())?;
+        if !verify_login_password(current_password)?.ok {
+            return Err("Current password is incorrect".to_string());
+        }
+    }
+
+    if new_password.is_empty() {
+        if has_password {
+            fs::remove_file(&path).map_err(|e| e.to_string())?;
+        }
+        return Ok(());
+    }
+
+    let salt = SaltString::generate(&mut OsRng);
+    let password_hash = Argon2::default()
+        .hash_password(new_password.as_bytes(), &salt)
+        .map_err(|e| e.to_string())?
+        .to_string();
+
+    if let Some(parent) = path.parent() {
+        fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+    }
+
+    fs::write(&path, password_hash).map_err(|e| e.to_string())?;
+
+    Ok(())
+}
+
 #[tauri::command]
 fn get_battery_info() -> Result<BatteryInfo, String> {
     let manager = battery::Manager::new().map_err(|e| e.to_string())?;
@@ -98,7 +185,10 @@ pub fn run() {
         .plugin(tauri_plugin_opener::init())
         .invoke_handler(tauri::generate_handler![
             get_battery_info,
-            get_network_info
+            get_network_info,
+            get_login_password_status,
+            verify_login_password,
+            set_login_password
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");