The Vault Key Card is designed for anyone who uses crypto.

It is not limited to long term holders, high value wallets, or specialist users. It is a physical authorization layer that can be applied to everyday wallets without changing how crypto is accessed or used.

Not Just for Large Balances

Cold storage is often framed as something reserved for large balances.

That framing comes from older models where security required isolating assets or interrupting access. The Vault Key Card follows a different approach by protecting authorization rather than restricting interaction.

As a result, the Vault Key Card is suitable regardless of wallet size.

For Active and Everyday Crypto Use

The Vault Key Card is compatible with regular, ongoing crypto activity.

Balances remain visible, transactions are prepared inside Zypto App, and on chain interaction continues as normal. The only change is that transaction approval requires physical card presence when a wallet is attached.

This makes physical authorization compatible with everyday use rather than something that forces wallets into inactivity.

For Users Who Want Deliberate Approval

Some users prefer an extra step before transactions are finalized.

The Vault Key Card provides a deliberate, physical confirmation moment without adding complexity to the rest of the workflow. Approval cannot occur silently or automatically when a wallet is attached.

This control applies equally to frequent users and occasional users.

For Users Managing Multiple Wallets

The Vault Key Card operates at the wallet level.

Users can choose which wallets require physical authorization and which continue using app-only signing. Up to three wallets can be attached to a single Vault Key Card, and additional wallets can be protected by using additional cards.

Each wallet behaves independently, allowing different authorization rules within the same app environment.

For Users Who Want Flexible Security

The Vault Key Card is optional.

Wallets can be attached or detached when the physical card is present. When detached with the card available, app-only signing resumes immediately. No balances, transaction history, or wallet configuration is changed.

If the card is unavailable, the wallet must be restored using its seed phrase before operating without card-based authorization.

This allows users to adapt security as usage changes rather than committing to a fixed model.

For New and Experienced Crypto Users Alike

The Vault Key Card does not require specialist knowledge.

There is no separate device interface, no additional software, and no change to how Zypto App is used. Setup is quick, and the card integrates directly into existing workflows.

This makes card-based cold authorization accessible to new users while remaining robust enough for experienced ones.

A Universal Security Layer

The Vault Key Card is designed for anyone who uses crypto.

It separates interaction from authorization and makes physical approval available to any wallet where it is desired. That applies equally to small balances, everyday wallets, and more complex use cases.

Cold authorization is not a niche feature. It is a general purpose security layer.

Explore the Vault Key Card in Practice

→ What Is the Vault Key Card?
→ How the Vault Key Card Works With Zypto App
→ What the Vault Key Card Protects (and What It Doesn’t)
→ What Happens If You Lose the Vault Key Card?
→ Do You Need the Vault Key Card for Every Transaction?
→ When to Use the Vault Key Card vs App-Only Signing
→ Who Is the Vault Key Card For?
→ Vault Key Card vs Device-Based Hardware Wallets (When VKC Makes More Sense)
→ Is the Vault Key Card Worth Using If You’re New to Crypto?

FAQs