The new physical dice called Pixels are Bluetooth-enabled dice with
integrated RGB LEDs and can be modified depending on what you rolled through their app.
They can communicate online via Bluetooth, so if you roll irl it
displays the roll in roll20 (and any other page your group plays on like
DnD Beyond). Pixels are very new and as such we need to drum up some
hype here in roll20 and others to set up an extension for Pixels to work
on their platform.