I read that you're not supposed to do this and I was wondering if that only applies with bare fingers (due to oil)? Because I recently received my hard drive for my upcoming rig. It came in a plastic container. While inspecting it I put some pressure on the back of the container enough to cave the plastic in to the point where it touched one of those little black squares (labeled 4R71 on my Samsung Spinpoint F3 1TB model HD103SJ) on the circuit board. Keep in mind I didn't put any pressure on it, the plastic just touched it.
I'm a first time builder so this is probably a newbie question but I want to be extra cautious.