ZeroKeyUSB

Keeping track of all your passwords has become nearly impossible. Between email accounts, banking platforms, streaming services, work tools, social media, online shopping, and dozens of apps, most people are forced to manage 10, 20, or even more unique passwords — each with its own rules: numbers, special characters, uppercase letters, and minimum lengths.

We try to make it work:

• Some reuse the same password everywhere, even though it's risky.
• Others write them down on paper or store them in text files, which can easily be lost or seen by someone else.
• Some rely on memory — until that one login fails, and you find yourself locked out at the worst time.

If any of that sounds familiar, you're not alone. Forgetting a password is frustrating, time-consuming, and often leads to weaker security habits. That’s the core problem ZeroKeyUSB aims to solve — but the problem itself is what matters here.

People aren’t bad at managing passwords because they’re careless — it’s because the system is broken. Every platform demands stronger, longer, more unique combinations, and we're expected to remember all of them without help.

With more services going online and security becoming more critical, this problem only gets worse. Password resets, two-factor prompts, recovery emails… they all add to the noise.

What we need is a way to simplify password management without compromising safety.
A way to stop depending on memory, notebooks, or insecure habits.

That’s the need ZeroKeyUSB responds to — the growing, everyday pain of simply trying to remember what gets you into your own digital life.

Imagine unlocking all your digital accounts with just one secret code. That’s the beauty of a master PIN — a simple, familiar concept used by virtually every password manager for a good reason: it works.

Instead of remembering dozens of passwords, you remember just one. Your PIN becomes your personal key — the one thing you need to access all your credentials. With ZeroKeyUSB, once you enter your PIN, the device unlocks and lets you access any of your saved accounts. No extra steps, no confusion.

We haven’t reinvented this — because it doesn’t need reinventing. We focused on making it feel natural, fast, and safe.

But there’s one important difference:
Your PIN is never stored anywhere on the device.
When you first set up your ZeroKeyUSB, it generates a random internal key — a unique vector that never leaves the hardware. From that moment on, your PIN is only used in combination with that internal key to encrypt and decrypt your data. This means that even if someone accessed the memory of the device, they wouldn’t be able to make sense of it — because without your PIN, everything remains scrambled and unreadable.

So yes, one PIN gives you access to everything —
but that PIN belongs to you and only you.
No backups, no syncing, no one else in the loop.

Whether you're checking your email, logging into work, or managing your crypto wallet, that one PIN is your way in — no more mental gymnastics every time you face a login screen.

ZeroKeyUSB was built with a clear philosophy: stay offline to stay secure.

In a world where everything is constantly connected, going offline may seem like a step backward — but when it comes to privacy, it’s a huge leap forward. Every time your data touches the internet, it’s exposed to potential threats: data leaks, server breaches, remote access vulnerabilities, or just companies mishandling your information.

With ZeroKeyUSB, your passwords never leave the device.
There’s no cloud to sync with. No accounts to create.
No apps to install, and no background processes running on your computer.

It doesn’t matter if you’re connected to Wi-Fi, airplane mode, or completely off the grid — your credentials are always right there with you, protected and ready. This offline-first approach means you are not dependent on anyone else’s infrastructure or uptime.

Many tools claim to be “secure,” but rely heavily on cloud syncing, browser extensions, or third-party services. That adds complexity, and complexity is where vulnerabilities hide.

ZeroKeyUSB is different. Its simplicity is intentional.
It acts like a keyboard — just plug it in, unlock it, and it types your data for you. No drivers. No tracking. No hidden connections.

Being offline isn’t just a feature — it’s the core design principle that separates ZeroKeyUSB from the rest. It’s built for people who want real privacy, full ownership of their data, and the peace of mind that comes from knowing their sensitive information never touches the internet.

Because in the end, what’s not online, can’t be hacked online.

ZeroKeyUSB protects your data using AES-128 encryption, a military-grade standard trusted by governments, banks, and cybersecurity professionals. But while the protection is advanced, the experience is simple and effortless for you.

Here’s how it works behind the scenes:

When you first set up your ZeroKeyUSB, the device generates a unique secret key and a random initialization vector (IV). These are stored internally and never leave the hardware. They’re never shown, copied, or backed up anywhere — they live entirely inside the device.

From then on, every time you save a password, that secret key and IV are combined with your PIN to encrypt the data. This ensures that even if someone physically extracts the memory, what they find will be impossible to interpret without the correct combination. It’s not just locked — it’s mathematically scrambled.

This encryption uses AES-128 in CBC mode (Cipher Block Chaining), which splits your data into blocks and chains them together in a way that ensures even the tiniest change in the input completely transforms the output. That’s why it’s considered one of the most secure and efficient encryption schemes in the world.

And yet, for you as a user, it’s invisible.
You unlock the device with your PIN, choose a credential, and the device types it for you.
No keys to manage. No cryptographic knowledge required.

In addition, ZeroKeyUSB includes brute-force protection: if someone enters the wrong PIN multiple times, the wait time increases exponentially. This makes guessing your PIN impractical — even with unlimited time and access.

All of this happens inside the hardware. No connection to the internet. No third-party services involved. Just you, your device, and the strong encryption protecting your most sensitive data.

ZeroKeyUSB gives you military-level security in a form anyone can use.

ZeroKeyUSB isn’t just durable — it’s built like a vault.

From the very first prototype, this device was engineered to survive real-world use. The entire electronics module — including the screen — is fully encapsulated in industrial-grade resin, forming a single solid block. This resin shell acts as a permanent shield against water, dust, shocks, and physical tampering.

Whether it’s dropped, splashed, or exposed to extreme environments, ZeroKeyUSB keeps working. The internal components are completely sealed, meaning moisture and debris can’t reach the circuitry, and impact forces are absorbed and distributed across the rigid enclosure.

But the benefits go beyond durability. This encapsulation also makes ZeroKeyUSB tamper-proof. Since the electronics are embedded in resin, it’s impossible to access or modify them without visibly and irreversibly destroying the device. No one can connect probes, swap chips, or clone the memory — not even with physical access.

There are no screws, seams, or openings. What you see is what you get: a single, solid device with no weak points, no external dependencies, and no maintenance required.

ZeroKeyUSB doesn’t just protect your passwords — it protects itself, too.

It’s a compact, resilient security key that’s designed to last for years — in your pocket, on your desk, or anywhere life takes you.

ZeroKeyUSB is designed to work seamlessly across all major platforms — no configuration, no drivers, no internet required.

Whether you're on Windows, macOS, Linux, or Android, ZeroKeyUSB acts like a standard USB keyboard. That means wherever you can plug in a USB device, you can use ZeroKeyUSB. It types your credentials directly into any login field, making it instantly compatible with browsers, desktop apps, terminals, mobile devices with adapters, and more.

You don’t need to install anything. You don’t even need an internet connection. Just plug it in, unlock it with your PIN, and start using your stored passwords immediately.

Even better, ZeroKeyUSB supports multiple keyboard layouts, so it types everything correctly no matter where you are in the world. Spanish (ES), English (US/UK), French (FR), German (DE), and more — just select your preferred layout through the local configuration tool and the device will remember your choice.

This flexibility makes ZeroKeyUSB the perfect companion for digital nomads, professionals, and privacy-conscious users who work across different systems or travel frequently. You’re never locked to a specific operating system, platform, or brand — your passwords go with you, securely and effortlessly.

Wherever you go, whatever you plug into — ZeroKeyUSB just works.

ZeroKeyUSB comes with an optional web interface for managing your credentials more comfortably — and it works entirely offline.

This tool is a single, lightweight HTML file that runs in your browser. You can access it either by opening it directly from zerokeyusb.com/webtool.html or by downloading the page from GitHub and running it locally. In both cases, no internet connection is required.

Once your ZeroKeyUSB is plugged in and unlocked with your PIN, you’ll see two new options in the device menu: Export and Import.

Export: When selected, your credentials are sent to the browser and displayed in a structured table where you can:

• View all stored entries clearly
• Edit any field easily and securely
• Sort entries by name or category
• Back up your data to an encrypted file you can store safely

Import: Allows you to restore your encrypted backup by uploading it through the same interface. The device handles all the decryption internally, so your sensitive data never leaves your system or becomes exposed.

Note that this interface doesn’t allow layout changes or theme customization, as the goal is clarity and simplicity. But everything important — organizing, reviewing, editing, and backing up your credentials — is there.

All encryption and validation logic is performed by the device. The web tool acts only as a viewer and editor, never having access to your PIN, your encryption keys, or your raw memory data.

This optional interface makes ZeroKeyUSB accessible to everyone, regardless of technical skill. Whether you prefer using the built-in screen and buttons, or prefer managing your data with a full keyboard and monitor, ZeroKeyUSB adapts to you.

At the heart of ZeroKeyUSB is a core belief: trust must be earned — and verified. That’s why every part of the project is fully open source.

From the firmware that runs on the microcontroller to the local web interface you use for managing credentials, every line of code is public and available on GitHub. This means you, or anyone in the community, can review how ZeroKeyUSB works, check for flaws, suggest improvements, or even build your own version.

But we didn’t stop at software. The entire hardware design is open as well. The schematics, PCB layout, bill of materials, and mechanical design files are also published and free to explore. This level of transparency is rare in security devices — and we believe it’s essential.

With closed-source tools, you have to blindly trust that no backdoors or weak points exist. With ZeroKeyUSB, the logic is simple: if you can see it, you can verify it.

We also include detailed documentation that explains not just what the device does, but how it does it — from encryption routines to memory protection mechanisms, and even the limitations we’ve imposed to protect against misuse.

Transparency builds community. We’ve already seen developers contribute improvements, users propose features, and educators use the project to teach secure design principles. If something doesn’t make sense to you, you can ask. If something could be better, you can help make it better.

There’s no hidden server. No secret firmware updates. No telemetry. What you see is what you get — and what you get is yours to explore, adapt, and improve.

ZeroKeyUSB isn’t just a product — it’s a project built on openness, peer review, and long-term trust.