Nop, This is not a physical card, is the option to allow the DIGITAL DOWNLOAD of a game you own on cartridge to another console on your family group. the process is:
You buy a physical cartridge, you play it on your main console.
You enable <<virtual card>>
you eject the physical cartridge from your main console
you download the game on your secondary console and you are legally allowed to play it.
you CAN NOT play the game on two consoles at the same time.
It´s basically you can convert a cartridge on a digital copy for play on secondary consoles. so it´s easy to play and may be you don´t loose your physical copy when you travel.