The randtext
won't randomize as it looks. You can't copy paste the word.:
\documentclass{article}
\usepackage[english]{babel}
\usepackage{randtext}
\begin{document}
this is my randomized \randomize{Random Text} here.
\end{document}
This is how pdf looks:

When you try to copy paste the entire sentence from the resulting pdf, you get:
this is my randomized
n
x
m
t
o
d
e
T
Ra
here.
This package is meant to prevent the copy paste-ability of email addresses. From documentation:

Unfortunately not all pdf readers obey this randomization. It works with sumatrapdf (for me) and not with adobe.