You can check web browser support at caniuse.com.
Latest versions of Chrome, Chromium or Edge are recommended to use Vial Web.
You can also download the standalone Vial application from get.vial.today.
In order to proceed, the keyboard must be set into unlocked mode. You should only perform this operation on computers that you trust.
To exit this mode, you will need to replug the keyboard or select Security->Lock from the menu.
Press and hold the following keys until the progress bar below fills up: