Adding An Invisible Character

So you just happen to want to add an invisible (blank) character somewhere. Maybe to troll someone, make a social media account with no name, or something like that. Here's how:

1. Press and hold Alt key and while holding it, type digit keys 255 at the numeric keypad. 

2. Release the Alt key. 

3. After releasing the Alt key a blank character is inserted into a text and cursor moves to the next position.

Yeah that's not a big deal.