More like "You don't need any tools for this, just use your thumb."
The idea being that every computer you own and happen to come across has a browser already. You will not need to install a client so it doesn't matter that you don't have rights to do so or don't want to pollute someone else's computer.
It is pretty straight forward.
vs.
"You don't need a special hammer to bang our nail. Simply use your existing hammer."