For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Auto Writer for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Auto Writer
Simple but effective text writing utlility.
Writes from text files in realtime using text meshes placed in your scene.
Suitable for any game type.
Great for
– 3d HUDs
– Computer monitors
– Hand written letters
– Character dialog
– Tutorials
– Horror effects
Key features
– Easy integration into any project
– Easily activated and choreographed through code or simple animation files
– Assignable sounds for letters and words with alternate sounds for special characters
– Per letter or per word typing
– Speed and variable timing options
– Chaining of multiple text objects