Can someone answer me about this duping method

i red a post about duping,
it say's have 2 characters deal the items to the other character then press ctrl+alt+delete then end RF then theyve said your items will be duped

is this true??? cos it sounds fishy

this method was patched before.
so it's not working now.

the only duping process i know of still working are:
rollbacks(if u know how to crash the server)
item generation or changing 1 item to another(that is if u can make the server realize ur items or itL only be client sided)

---brain damage from dupe T_T

it is not working anymore.. this was already patched