> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Game Saves Active Device Changes

> Handle PlayFab Game Saves active device changes to prevent progress loss when players switch devices mid-session across multiple platforms.

## Handling Active Device Changes

When a player switches devices mid-session, it's important to prevent them from accidentally losing progress by playing on multiple devices simultaneously.

### The Problem Scenario

1. **Player starts on Device A**: Begins playing and becomes the "active" device
2. **Player switches to Device B**: Logs in and chooses "Sync Last Saved Data"
3. **Device B becomes active**: Device A is no longer the active device, but may not know this
4. **Risk of lost progress**: Player could continue playing on Device A, creating conflicting save states

### The Solution: Active Device Callbacks

Listen for active device changes and gracefully handle the transition:

```cpp theme={null}
// Set up the active device changed callback during initialization
hr = PFGameSaveFilesSetActiveDeviceChangedCallback(
    optionalTaskQueue,                    // Use nullptr for immediate callback
    MyActiveDeviceChangedCallback,        // Your callback function
    contextPtr);                          // Optional context for your callback
```

### Callback Implementation Example

```cpp theme={null}
void MyActiveDeviceChangedCallback(void* context)
{
    // The current device is no longer active for Game Saves
    
    // 1. Pause the game immediately
    
    // 2. Inform the player what happened
    // with a message such as:
    // "Your game progress is being continued on another device."
    // "Returning to main menu to prevent data loss."
    
    // 3. Return to a safe state (main menu)
    
    // 4. Re-initialize Game Saves system when ready to play again
    // (The player will need to sync again from the main menu)
}
```

### XBOX-Specific Exception

If your game only signs in using XBOX's **Single Point of Presence (SPOP)** feature, this scenario is automatically prevented. SPOP ensures a user can only be signed in on one XBOX device at a time.

### Best Practices

* **Always implement this callback** for multi-platform games
* **Pause gameplay immediately** when the callback triggers
* **Clearly explain to players** why they're being returned to the menu
* **Make re-entry easy** by returning to main menu rather than closing the game


## Related topics

- [Game Saves quickstart](/services/playfab/player-progression/game-saves/quickstart.md)
- [Game Saves UI callbacks](/services/playfab/player-progression/game-saves/ui-callbacks.md)
- [Game Saves offline mode](/services/playfab/player-progression/game-saves/offline.md)
- [Game Saves system dialogs](/build/core-features/common/game-save/game-saves-dialogues.md)
- [Game Saves tools](/build/core-features/common/game-save/game-saves-tools.md)