CardType : Identifies the type of card (e.g., SRAM, Modem, ATA).

Never put actual plaintext passwords or private keys directly in this file; point to a secure file path instead.

If you have stumbled upon this file—whether in a manufacturing plant, a legacy Point-of-Sale (POS) system, or an old hardware debugging toolkit—you are likely dealing with a specialized piece of hardware interface software. This article provides a comprehensive deep dive into the cardtool.ini file: what it is, where it lives, how to configure it, and how to solve the most common errors associated with it.