Possible put same nickname?

I heard someone ppl that can use same nickname for cheat and scared ppl.....

for example nickname is Trojan and maybe one guy program hack use same nickname Trojan too

but its work only when im offline and he can log (not my char real personal but he use different another char but WITH SAME NICKNAME)

so i say is possible? what program does do?

I guess isnt possible.
Normaly ppl try to make a name very close to the target, using numbers or letters.
But in the same server isnt possible. Just in different servers.

It's possible to use code to supplement characters such as "_" and space and some letters, so in the end you have two names that look exactly the same but are inputted differently. It's impossible to tell these characters apart unless you configure your OS to detect these codes (something to do with language settings). This scam isn't as common as the easier scam (involving a slight variation in the name, for example, FireTao vs. Firetao).

Sound strange i know already can be similar nickname or a little close targhet.....but my girlfriend is not stupid she check many time and cant be true....my nickname look too perfect identical...is write just my nick Trojan and he use same Trojan...but program hack will dc only when im online coz cant keep online both with same nickname or server will get confuse...so i wonderful if someone know about it :/

hmm, thats wierd.... maybe some bug after new patch

X.x hope no..or someone know a new program for put same nickname but different account personal i guess..