# Where to purchase a Keystone device

**The Keystone device, which also offers QR code signing, and is compatible with Casa BTC vaults, can be purchased here:**

**[https://keyst.one](https://keyst.one/features?toBuy=true&locale=en)**

**Please note that the Keystone is only supported for BTC vaults. ETH vaults are not supported at this time.**

See our article [**Where to buy your hardware device**](https://support.casa.io/knowledge/where-to-purchase-your-hardware-device?hsLang=en) to find out where to purchase more of our **[supported hardware devices](https://support.casa.io/knowledge/supported-platforms-and-hardware-device-firmware?hsLang=en).**