key (which is customizable in the controls menu) instantly doubles the item currently held in the player's main hand. Server-Side Logic
A duplication glitch (or “dupe”) is an exploit that allows a player to create an exact copy of an item, often bypassing survival mode’s resource limitations. Dupes can involve: File name- Dupe-Trigger-Mod-Fabric-1.20.1.jar
In vanilla Minecraft, Mojang has patched most known dupes, but some still exist in specific server configurations (e.g., Paper, Spigot, or vanilla with redstone exploits). Mods like this one claim to trigger such glitches intentionally. key (which is customizable in the controls menu)
Genuine exploit researchers (e.g., from the Minecraft@Home community) name their projects neutrally: "TimingTestMod" or "PacketDebug." A file screaming "DUPETRIGGER" is either a honeypot or a 12-year-old’s script-kiddie attempt. Mods like this one claim to trigger such
The trigger key can be remapped to any other key via the in-game NBT Preservation:
where resources are needed quickly.