> For the complete documentation index, see [llms.txt](https://factorypos.gitbook.io/pos-r4-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://factorypos.gitbook.io/pos-r4-en/main-screen/preferences.md).

# Preferences

If the terminal is not FactoryPOS certified, this screen displays a set of configuration parameters:

<figure><img src="/files/rnwGHgX9ELpEm34eQ26d" alt=""><figcaption></figcaption></figure>

### DB&#x20;

* **DB location on sdcard:** Select if you want to place the database on the SD card of your device.&#x20;

### Behavior&#x20;

* **Start FactoryPOS when you turn on the device:** Enable this option to start FactoryPOS every time you reboot the device.&#x20;
* **Automatically launch screensaver:** Enable it if you want the android screensaver to be displayed when you are not using the program.&#x20;
* **Idle seconds:** If you enable the previous option you must enter the seconds of inactivity before displaying the screensaver.&#x20;

### Screen size&#x20;

* **Screen size:** Enable it to define the screen size manually. Disable to let the application automatically detect the screen size.&#x20;
* **Device inches:** If you enable the previous option you must enter the inches of your device to correctly adjust the screen layout.&#x20;
* **Full Screen:** Enable to have the application use the entire screen while hiding the notification bar. Disable so that the application does not hide the notification bar.&#x20;

Once you have finished adjusting the settings, press ![](/files/GlmeiG4FGhLThhdQRKcP) to return to the main screen.