Privacy

Privacy

Applies to Player Activity View 0.0.0-beta.4 for Minecraft 1.21.1 (NeoForge), and to the stable 26.x lines.

This page is the reason this mod has a wiki page of its own.

Player Activity View works by broadcasting information about what each player is doing to other players. That is the feature. It is also worth understanding precisely, because "my mouse is moving and my inventory is on screen" is information you may not intend to share with a server you do not run.

What leaves your client

When the mod is installed on both sides, your client sends:

	Default	Config option
That you are typing	on	sendTypingSpeed
How fast you are typing	on	sendTypingSpeed
Which interface you have open	on	sendActiveGui
An image of that interface	on	server-side, see below
That you went idle, and when you came back	on	sendIdleState
Your relative mouse position and clicks	on	sendMouseInfo
Items moving between you and containers	on	dontSendItemInfo

Your relative mouse position is sent by default. Not the contents of your inventory — the position of your cursor and the fact that you clicked. That is enough to reconstruct intent. It exists so arm animations can point where you are pointing. If that is not something you want shared, this is the option to turn off.

The two settings that stop the sending

These are the important ones, and both live in the client config:

Option	Default	Effect
dontSendDetailedGUIInfo	false	Set to true and detailed GUI information stops being sent.
dontSendItemInfo	false	Set to true and item-transfer information stops being sent.

Their defaults are false, which means the data is sent. They are opt-outs, not opt-ins.

Note that these control sending, not display. Turning one off means nobody receives that information — not even a server admin. There is no "show it to me but not to them" mode.

What the server can do

The server config is synced to every client, so a server owner can restrict what is broadcast regardless of local client settings. That is the mechanism for running a server where players did not choose to participate.

Server option	Default	Effect
distanceRequiredToShowGUIInfo	10	How close another player must be to see GUI information at all.
showItemsBeingTransferredBetweenPlayerAndContainer	true	Whether transfer animations happen at all.
dynamicGuiTickSendRateOfGUIUpdates	10	Ticks between GUI image updates.
dynamicGuiDontSendConstantGUIUpdates	true	Only the initial image is sent.
dynamicGuiShowClientsEntireScreen	false	Whole screen instead of a circular crop.
dynamicGuiDisableBackgroundRendering	true	Skips rendering the GUI background.
dynamicGuiUseOldSimpleGUIVisual	false	Reverts to the pre-crop, simpler panel.
showIdleStatesInPlayerList	true	Idle marker in the tab list.
showIdleStatesInPlayerAboveHead	true	Idle marker above the head.
showPlayerAnimations	true	Master switch for all animations.
playScreenOpenSounds / playMouseClickSounds	true	The audio cues.

The strongest single lever is distanceRequiredToShowGUIInfo. At its default of 10, GUI information is inherently short-range — it is not broadcast to the whole server. Raising it makes it more private, not less. Setting it to 1 means only a player standing on top of you can see it.

Recommended setups

You do not want others seeing what you are doing

Install client-side only, or set dontSendDetailedGUIInfo and dontSendItemInfo to true. Client-only is the simplest guarantee, because a mod you do not have cannot report anything.

A server where players did not opt in

Install server-side with the server config restricting it. Keep dynamicGuiDontSendConstantGUIUpdates on, keep the distance low, and consider turning off showItemsBeingTransferredBetweenPlayerAndContainer.

A co-op server where AFK detection is the point

Install on both sides. That is what the mod is for, and the players there chose to be in it with each other.

What is not sent

To be precise about the boundary:

• Inventory contents are not sent as text. The GUI mirror is an image of what is already on your screen, which does show item names and tooltips — but no structured inventory data is transmitted.
• Keystrokes are not recorded. Typing is detected as "is typing" and at what rate. The characters themselves are not sent, and what you typed in chat is handled by vanilla.
• Your position is not sent by this mod. It already is, by the game.

Where the data goes

To other players on the same server, within the configured distance, over normal modded networking. It does not leave the server and there is no external service involved. The one practical consequence is bandwidth, covered in Compatibility.