You do realize what he is asking in being down played by the way he is asking it.

In black in white for you ..

No you cant log into your account to send materials , gil , or event items to your other character.

This is called MULES and SE does not want you to be able to MULE. Not so much you personally but... more so to combat RMT / GIL SELLERS.

So to answer your question.. No you cant CHEAT.