> For the complete documentation index, see [llms.txt](https://whitepaper.lacunalabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.lacunalabs.io/the-lacuna-wallet/shield-unshield-transfer.md).

# Shield, Unshield & Transfer

These three actions are the core of the wallet.

## Shield

Move funds from a public address into the shielded pool. This creates a private note for you.

## Transfer

Send shielded funds to another Lacuna user privately. A zero-knowledge proof confirms you have the funds; no balance, identity, or deposit link is revealed.

## Unshield

Withdraw shielded funds back to a public address whenever you want.

## Via The SDK

The same actions are available programmatically:

```ts
import { LacunaWallet } from "@lacuna/sdk";

const wallet = await LacunaWallet.create({ pin });

// Shield: deposit into the private pool
await wallet.shield({ token: "USDC", amount: "100" });

// Transfer: private send to another user
await wallet.transfer({ to: recipientAddress, amount: "40" });

// Unshield: withdraw back to a public address
await wallet.unshield({ to: publicAddress, amount: "25" });
```

See the full [Wallet & Developer SDK](/for-developers/sdk.md) reference.


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