vive foam is the foam insert in a vive vr headset that acts as a cushion, making the headset more comfortable to wear around your face. foam is pretty absorbent, and since it's
simply putting files in the trash and emptying it leaves them on your hard drive in a form that is fairly easy to recover. this solution is free, and requires only a bit of time
in linux, files can be deleted but can still be recovered. these are things to do when you really want them to disappear.
wiping, shredding, deleting, erasing all seem to have similar meanings, but in essence, these operations have completely different meanings.