nixpkgs/nixos/modules/programs/digitalbitbox/default.md

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# Digital Bitbox {#module-programs-digitalbitbox}
Digital Bitbox is a hardware wallet and second-factor authenticator.
The `digitalbitbox` programs module may be installed by setting
`programs.digitalbitbox` to `true` in a manner similar to
```
programs.digitalbitbox.enable = true;
```
and bundles the `digitalbitbox` package (see [](#sec-digitalbitbox-package)),
which contains the `dbb-app` and `dbb-cli` binaries, along with the hardware
module (see [](#sec-digitalbitbox-hardware-module)) which sets up the necessary
udev rules to access the device.
Enabling the digitalbitbox module is pretty much the easiest way to get a
Digital Bitbox device working on your system.
For more information, see <https://digitalbitbox.com/start_linux>.
## Package {#sec-digitalbitbox-package}
The binaries, `dbb-app` (a GUI tool) and `dbb-cli` (a CLI tool), are available
through the `digitalbitbox` package which could be installed as follows:
```
environment.systemPackages = [
pkgs.digitalbitbox
];
```
## Hardware {#sec-digitalbitbox-hardware-module}
The digitalbitbox hardware package enables the udev rules for Digital Bitbox
devices and may be installed as follows:
```
hardware.digitalbitbox.enable = true;
```
In order to alter the udev rules, one may provide different values for the
`udevRule51` and `udevRule52` attributes by means of overriding as follows:
```
programs.digitalbitbox = {
enable = true;
package = pkgs.digitalbitbox.override {
udevRule51 = "something else";
};
};
```