There is a way to gain root access, it is a process on Android devices called "Rooting" all be it, not without its dangers as one member found out today.
With your device as it is a B70 there is one definite way of gaining root, and another possible way which works on "some" B70" devices but not the majority.
Razorclaw is the rooting tool, but be aware, OTA updates will no longer work once you have rooted, and getting back to stock in order to repair OTA updates will require you to completely wipe the tablet clean by flashing a stock ROM.
Again, because of your TF being B70 - this method will more likely need to be done via a custom recovery called ClockWorkMod that you need to flash in place of the stock recovery. (Make sure you flash ClockWorkMod after rooting to avoid being stuck with a damaged ROM if root fails)
So with all that said, if you still want root access, here is the link to the tool
http://www.transformerforums.com/for...orclaw-v1.html
ClockWorkMod Recovery installer
Multiupload.com - upload your files to multiple file hosting sites!
Instructions on flashing back to stock
How To Unroot and Remove CWM Recovery on Asus Transformer | TheUnlockr