How to get a reboot card?

Hello there, I'm curious about how one might acquire a reboot card. Could you please elaborate on the steps involved in obtaining such a card? Is it a physical or digital item? Are there any specific requirements or qualifications that need to be met before one can get their hands on a reboot card? Additionally, are there any known vendors or platforms where these cards are readily available? Your insights would be greatly appreciated. Thank you in advance for your time and assistance.