In Administration - Device Settings, in the PIN tab, you can manage the following PIN settings:
PIN length - set a number for the minimal PIN length.
PIN density - Set the percentage for PIN density. When the density of all PINs reaches this level, the length of all new PINs will be increased by 1.
Click Save all in the upper-right corner to apply your changes.
In case you want to remotely register and log in to a device, click Open Device Code Page to get redirected to the Device Code page, where you can insert your device codes.