Pfc There is not so smart ^^ But there is scripts that can bypasses mine protcection so i want to make it a litle bit more Secure !!
Check This http://insane-gamers.com/showthread.php?7515-SOLVED-L2-The-Sacred-Metal-Captcha-Protection
Edit :
//CODE & CONCEPT BY Phear3d
//Written August 25, 2010
SET_EVENT "<&SCRIPTEVENT_SERVERPACKET&>" "<&SYSTEM_CURRENTFILE&>" NpcHtml 25
BLOCK 25
PRINT_TEXT "Captcha script is running!"
WHILE ZERO == ZERO
SLEEP 2000
WEND
END_SCRIPT
FUNCTION NpcHtml
DEFINE INT PacketType 0
DEFINE INT ID 0
DEFINE STRING HTML ""
PACKET.READ_BYTE PacketType
PACKET.READ_INT32 ID
PACKET.READ_STRING HTML
IF "HTML.CONTAINS #$CAPTCHA" == TRUE
NPC_DIALOG "bypass -h voice .CAPTCHA LOL LOL"
PRINT_TEXT "Captcha Bot Check Found"
JUMP_TO_LABEL THE_END
ELSE
INJECTBB_CLIENT PACKET
ENDIF
LABEL THE_END
RETURN VOID
This is the solution some1 gives For L2 Net to bypass this protecrion ;)