diff --git a/system/bitcoin/hardware-wallets.nix b/system/bitcoin/hardware-wallets.nix
new file mode 100644
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--- /dev/null
+++ b/system/bitcoin/hardware-wallets.nix
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+### Hardware wallets
+# Enable the following to allow using hardware wallets.
+# See https://github.com/bitcoin-core/HWI for more information.
+{
+  services.hardware-wallets = {
+    # Ledger must be initialized through the official ledger live app and the Bitcoin app must
+    # be installed and running on the device.
+    # ledger = true;
+    # Trezor can be initialized with the trezorctl command in nix-bitcoin. More information in
+    # `../docs/services.md`.
+    # trezor = true;
+  };
+}