I have no clue how to do this, I need this because I want a player not be able to equip another tool or unequip the tool its currently using
Put LocalScript inside tool with following code. It will disable backpack when equipped.
tool = script.parent local function disableGui() game.StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType.Backpack, false) end tool.Equipped:Connect(disableGui)