You only need an activation key if you want to unlock advanced Hindi typing modules (using Mangal, Krutidev, or DevLys fonts).
If you want legitimate options, choose one of these: Soni Typing Tutor 2.1.32 Activation Key -FREE-
There are many excellent, free online typing tutors available, such as KeyBlaze, TypingClub, and NitroType, that offer comprehensive lessons and exercises to help improve your typing skills. You only need an activation key if you
The "Activation Key" is a unique code provided by the developers after purchase to unlock the full version of the software. While the trial version allows you to test the waters, the full version removes time limits and unlocks all 500+ exercises. Can you get an Activation Key for free? free online typing tutors available