I think I understand why GARP would want to forbid test-takers from bringing their own stationeries, mostly to avoid having cheat notes written or hidden on the pencils or erasers (e.g. eraser's paper wrapper), though I didn't think the proctors checked my calculator more closely (theoretically, I could write cheat notes on the 1-page quick guide cartoon paper that comes with my calculator). Buy anyways what I am curious about is on the no-eraser policy. Instead of providing takers with eraser, GARP chooses to forbid erasing. I imagine the correction system (circling new answer along with writing the correct answer letter) would require (some) manual intervention instead of simple automatic scanning? Why would GARP do this? Has the policy always been like this, or is this policy recent?