diff --git a/.gitignore b/.gitignore
index 5e92e6f..4946766 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,4 +40,7 @@ src/seedpass.egg-info/PKG-INFO
 src/seedpass.egg-info/SOURCES.txt
 src/seedpass.egg-info/dependency_links.txt
 src/seedpass.egg-info/entry_points.txt
-src/seedpass.egg-info/top_level.txt
\ No newline at end of file
+src/seedpass.egg-info/top_level.txt
+
+# Allow vendored dependencies to be committed
+!src/vendor/
diff --git a/README.md b/README.md
index 0f63233..7b39a4d 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ SeedPass now uses the `portalocker` library for cross-platform file locking. No
   - [Running the Application](#running-the-application)
   - [Managing Multiple Seeds](#managing-multiple-seeds)
     - [Additional Entry Types](#additional-entry-types)
+- [Building a standalone executable](#building-a-standalone-executable)
 - [Security Considerations](#security-considerations)
 - [Contributing](#contributing)
 - [License](#license)
@@ -502,6 +503,41 @@ python -m mutmut results
 ```
 
 Mutation testing is disabled in the GitHub workflow due to reliability issues and should be run on a desktop environment instead.
+## Development Workflow
+
+1. Install all development dependencies:
+```bash
+pip install -r src/requirements.txt
+```
+
+2. When `src/runtime_requirements.txt` changes, rerun:
+```bash
+scripts/vendor_dependencies.sh
+```
+Commit the updated `src/vendor/` directory. The application automatically adds this folder to `sys.path` so the bundled packages are found.
+
+3. Before committing, format and test the code:
+```bash
+black .
+pytest
+```
+
+
+## Building a standalone executable
+
+1. Run the vendoring script to bundle runtime dependencies:
+
+```bash
+scripts/vendor_dependencies.sh
+```
+
+2. Build the binary with PyInstaller:
+
+```bash
+pyinstaller SeedPass.spec
+```
+
+The standalone executable will appear in the `dist/` directory. This process works on Windows, macOS and Linux but you must build on each platform for a native binary.
 
 ## Security Considerations
 
diff --git a/SeedPass.spec b/SeedPass.spec
new file mode 100644
index 0000000..8d69efa
--- /dev/null
+++ b/SeedPass.spec
@@ -0,0 +1,38 @@
+# -*- mode: python ; coding: utf-8 -*-
+
+
+a = Analysis(
+    ['src/main.py'],
+    pathex=['src', 'src/vendor'],
+    binaries=[],
+    datas=[],
+    hiddenimports=[],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    noarchive=False,
+    optimize=0,
+)
+pyz = PYZ(a.pure)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.datas,
+    [],
+    name='SeedPass',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=True,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)
diff --git a/scripts/vendor_dependencies.sh b/scripts/vendor_dependencies.sh
new file mode 100755
index 0000000..96191e6
--- /dev/null
+++ b/scripts/vendor_dependencies.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VENDOR_DIR="src/vendor"
+
+# Clean vendor directory
+rm -rf "$VENDOR_DIR"
+mkdir -p "$VENDOR_DIR"
+
+pip download --no-binary :all: -r src/runtime_requirements.txt -d "$VENDOR_DIR"
+
+echo "Vendored dependencies installed in $VENDOR_DIR"
diff --git a/src/main.py b/src/main.py
index 565ade0..6219ca5 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,10 +1,15 @@
 # main.py
-import os
 from pathlib import Path
 import sys
+
+# Add bundled vendor directory to sys.path so bundled dependencies can be imported
+vendor_dir = Path(__file__).parent / "vendor"
+if vendor_dir.exists():
+    sys.path.insert(0, str(vendor_dir))
+
+import os
 import logging
 import signal
-import getpass
 import time
 import argparse
 import asyncio
diff --git a/src/password_manager/config_manager.py b/src/password_manager/config_manager.py
index 269a10a..eb0e0cf 100644
--- a/src/password_manager/config_manager.py
+++ b/src/password_manager/config_manager.py
@@ -6,7 +6,7 @@ import logging
 from pathlib import Path
 from typing import List, Optional
 
-import getpass
+from utils.seed_prompt import masked_input
 
 import bcrypt
 
@@ -93,7 +93,7 @@ class ConfigManager:
                 self.save_config(data)
             if require_pin and data.get("pin_hash"):
                 for _ in range(3):
-                    pin = getpass.getpass("Enter settings PIN: ").strip()
+                    pin = masked_input("Enter settings PIN: ").strip()
                     if bcrypt.checkpw(pin.encode(), data["pin_hash"].encode()):
                         break
                     print("Invalid PIN")
diff --git a/src/password_manager/manager.py b/src/password_manager/manager.py
index b8ebd09..8434808 100644
--- a/src/password_manager/manager.py
+++ b/src/password_manager/manager.py
@@ -12,7 +12,6 @@ with the password manager functionalities.
 import sys
 import json
 import logging
-import getpass
 import os
 import hashlib
 from typing import Optional, Literal
@@ -668,8 +667,8 @@ class PasswordManager:
         Prompts the user for the master password to decrypt the seed.
         """
         try:
-            # Prompt for password
-            password = getpass.getpass(prompt="Enter your login password: ").strip()
+            # Prompt for password using masked input
+            password = prompt_existing_password("Enter your login password: ")
 
             # Derive encryption key from password
             iterations = (
diff --git a/src/runtime_requirements.txt b/src/runtime_requirements.txt
new file mode 100644
index 0000000..38cf46e
--- /dev/null
+++ b/src/runtime_requirements.txt
@@ -0,0 +1,29 @@
+# Runtime dependencies for vendoring/packaging only
+# Generated from requirements.txt with all test-only packages removed
+colorama>=0.4.6
+termcolor>=1.1.0
+cryptography>=40.0.2
+bip-utils>=2.5.0
+bech32==1.2.0
+coincurve>=18.0.0
+mnemonic
+aiohttp>=3.12.14
+bcrypt
+portalocker>=2.8
+nostr-sdk>=0.42.1
+websocket-client==1.7.0
+
+websockets>=15.0.0
+tomli
+pgpy==0.6.0
+pyotp>=2.8.0
+pyperclip
+qrcode>=8.2
+typer>=0.12.3
+fastapi>=0.116.0
+uvicorn>=0.35.0
+httpx>=0.28.1
+requests>=2.32
+python-multipart
+orjson
+argon2-cffi
diff --git a/src/tests/test_password_prompt.py b/src/tests/test_password_prompt.py
index e9d04d4..54eda13 100644
--- a/src/tests/test_password_prompt.py
+++ b/src/tests/test_password_prompt.py
@@ -9,16 +9,14 @@ from utils import password_prompt
 
 def test_prompt_new_password(monkeypatch):
     responses = cycle(["goodpass", "goodpass"])
-    monkeypatch.setattr(
-        password_prompt.getpass, "getpass", lambda prompt: next(responses)
-    )
+    monkeypatch.setattr(password_prompt, "masked_input", lambda prompt: next(responses))
     result = password_prompt.prompt_new_password()
     assert result == "goodpass"
 
 
 def test_prompt_new_password_retry(monkeypatch, caplog):
     seq = iter(["pass1", "pass2", "passgood", "passgood"])
-    monkeypatch.setattr(password_prompt.getpass, "getpass", lambda prompt: next(seq))
+    monkeypatch.setattr(password_prompt, "masked_input", lambda prompt: next(seq))
     caplog.set_level(logging.WARNING)
     result = password_prompt.prompt_new_password()
     assert "User entered a password shorter" in caplog.text
@@ -26,7 +24,7 @@ def test_prompt_new_password_retry(monkeypatch, caplog):
 
 
 def test_prompt_existing_password(monkeypatch):
-    monkeypatch.setattr(password_prompt.getpass, "getpass", lambda prompt: "mypassword")
+    monkeypatch.setattr(password_prompt, "masked_input", lambda prompt: "mypassword")
     assert password_prompt.prompt_existing_password() == "mypassword"
 
 
diff --git a/src/utils/password_prompt.py b/src/utils/password_prompt.py
index 065ea0a..498e6b5 100644
--- a/src/utils/password_prompt.py
+++ b/src/utils/password_prompt.py
@@ -11,11 +11,10 @@ this module enhances code reuse, security, and maintainability across the applic
 Ensure that all dependencies are installed and properly configured in your environment.
 """
 
-import getpass
+from utils.seed_prompt import masked_input
 import logging
 import sys
 import unicodedata
-import traceback
 
 from termcolor import colored
 from colorama import init as colorama_init
@@ -53,8 +52,8 @@ def prompt_new_password() -> str:
 
     while attempts < max_retries:
         try:
-            password = getpass.getpass(prompt="Enter a new password: ").strip()
-            confirm_password = getpass.getpass(prompt="Confirm your password: ").strip()
+            password = masked_input("Enter a new password: ").strip()
+            confirm_password = masked_input("Confirm your password: ").strip()
 
             if not password:
                 print(
@@ -128,7 +127,7 @@ def prompt_existing_password(
     attempts = 0
     while attempts < max_retries:
         try:
-            password = getpass.getpass(prompt=prompt_message).strip()
+            password = masked_input(prompt_message).strip()
 
             if not password:
                 print(