Advanced Privacy

Fluidkey offers advanced features to further enhance your privacy.

Hide Trail

Until the 28th of November 2025, hide trail transactions allow you to earn rewards in LOCK, Houdini's token. You will be able to claim these rewards in-app after the campaign ends.

This feature is powered by Houdini Swap, a swap aggregator with a unique private mode that routes funds through two exchanges to remove the link between your existing address and the newly funded one.

The full flow typically takes between 5 and 30 minutes and partner exchanges use live AML monitoring to ensure compliance.

Combined with Fluidkey’s stealth addresses you get the best of both worlds: your funds are both untraceable and unlinkable onchain.

The integration is available for incoming transfers with a value of $60 to $100,000 across the chains and tokens listed below.

Chain	Available tokens
Ethereum	USDC, DAI, USDT, WETH, EURC, wstETH
Polygon	USDC, DAI, USDT, wstETH
Arbitrum	USDC, DAI, USDT, wstETH
Optimism	USDC, USDT, wstETH
Base	USDC

To get started, simply tap the activity details of an incoming transfer and press the Hide Trail button.

Exact fees and output amounts can vary from the amounts shown in the confirmation modal.