Child data law compliance, CARU compliance, and contextual ads

Child data laws, including but not limited to the Children’s Online Privacy Protection Act (COPPA), impose restrictions on how data can be collected and used from age-restricted users (for example, children under the age of 13, 16, or 18 depending on the applicable laws). Unity Ads provides game-level and user-level features to help publishers provide a safe and positive user experience to those users protected by relevant child data laws. Each Unity Ads-enabled project must specify whether their game targets age-restricted users.

Attention: It is your responsibility to ensure your App-level and User-level age designations are set up accurately in the Unity Ads Monetization dashboard.

There are two types of ads that can appear in your game:

  • Personalized ads leverage behavioral user data to serve content that is more likely to interest the user. For example, if a user has played a series of sport-themed games, ads for other games with similar sports themes might appear. Games targeting age-restricted users cannot serve personalized ads. Games that serve personalized ads tend to accrue more revenue than games that allow contextual ads.
  • Contextual ads are only based on the game that the user is currently playing. For example, if the user is playing a game that features basketball, other games that feature basketball are likely to appear, regardless of other games the user has played. Games that target age-restricted users can only serve contextual ads. Games that only serve contextual ads tend to accrue less revenue than games that allow personalized ads.

Setting game-level age designations

Selecting an age designation or compliance option determines how ad requests are processed in your project. At the game-level, all ad requests are treated as all child traffic or all adult traffic, depending on if your audience is children (as defined by applicable child data laws) or adults.

If your project is aimed at both children and adults, you can implement age designations at the user-level so you can specify the ad served by the user’s age group. Refer to Implementing user-level age designations for details.

These are the Child data law compliance options available through the Monetization dashboard:

  • This project is directed to children means the game falls under relevant child data law restrictions, and can therefore only serve contextual (non-targeted) ads to all users. This designation permits you to enable user-specific age designations solely for applications you also designate as mixed audience applications.
  • This project is not directed to children means the game does not fall under relevant child data law restrictions, and can therefore serve behavioral (targeted) ads to all users.
  • Mixed audience means that the project is directed to both children and adult users, as defined by relevant child data laws. For mixed audience projects, instead of handling all users uniformly and serving personalized ads or contextual ads to all regardless of their age, you can detect at the individual level what age group your users are and serve each user ads accordingly, following COPPA or other applicable child data law restrictions.

Note: To enable a Mixed Audience designation to your project, you must first select your project to be directed to children at the game-level age designation section.

Implementing user-level age designations

Note: You are only able to implement user-level age designations if your project is enabled for a mixed audience.

In the Monetization dashboard, game-level age designations treat ad requests uniformly as if all users are children or adults. When you select the option that your project has a mixed audience, you are able to track your users’ individual signals and treat them as if they are a child or an adult, and serve contextual ads or personalized ads, respectively. If a signal is unspecified for any reason, contextual ads are served by default.

If your app is directed to children but you want to more appropriately represent a mixed audience, you can programmatically assign users an age designation according to a flag passed to the Unity Ads SDK.

To do this, implement the nonbehavioral metadata API according to your specific use case in the following sections.

Important: When the nonbehavioral field is true, the user cannot receive personalized ads. When the nonbehavioral field is false, the user can receive personalized ads. You must communicate the appropriate age-restricted status every time the SDK initializes to ensure that Unity Ads does not incorrectly treat a user as a child, as an adult opting out of personalized ads, or an adult consenting to personalized ads during their session.

Unity Ads exclusive and self-mediated customers

If your project sends signals to Unity directly instead of through a partner mediator (MAX, ironSource, or AdMob) and you want to implement user-level age designations:

  1. Implement a way to determine if the user should receive personalized ads. How you do this is up to your discretion.
  2. Communicate the age-restricted status of each user to Unity by implementing the nonbehavioral metadata API.
  3. Rebuild your application.
  4. In the Monetization dashboard, go to your project settings, then the Privacy settings section, and set the Game-level age designation to This app is directed to children, and Is this a Mixed Audience Game? to Yes.

Third-party mediation customers

If your project uses a supported mediation platform and you want to implement user-level age designations:

  1. Implement a way to determine if the user should receive personalized ads. How you do this is up to your discretion.

  2. Follow your mediation provider’s documentation on how to communicate that information to their platform. We currently support ironSource, MAX, and AdMob as third-party mediation solutions for user-level age designations.

    Note: For more information on initializing Unity Ads for your project and selecting a provider, refer to the mediation partner documentation.

  3. In the Monetization dashboard, go to your project settings, then the Privacy settings section, and set the Game-level age designation to This app is directed to children, and Is this a Mixed Audience Game? to Yes.

Third-party mediation platforms

If you are a third-party mediation provider that wants to support sending user-level age-restricted signals to Unity on behalf of developers, reach out to customer support or your managing partner.

Note: We currently support ironSource, MAX, and AdMob as third-party mediation solutions for user-level age designations. For more information on initializing Unity Ads for your project and selecting a provider, refer to the mediation partner documentation.

Tracking user-specific age-restricted signals

From the Project Settings page of the Monetization dashboard, after setting the game-level age designation to be a mixed audience and implementing user-level age designations in your app, you can then track the following:

  • User signal statuses in your app, per platform, if applicable
  • What the audience breakdown is between adult traffic and child traffic

Considering the age gate implementation in your app code correctly follows the age-restricted group definition of children (as defined by applicable child data laws) and adults, all unspecified traffic is composed of users who do not consent in sharing their age or age group in your app. In this case, unspecified traffic is treated as child traffic to be compliant with child data law restrictions. As a result, the sum of child traffic and unspecified traffic makes up the total of users who will be served contextual ads.

Important: It is your responsibility as the publisher to ensure your age gate implementation is compliant with applicable law and the intent of this user-level age-restricted feature. It’s not the responsibility of Unity or the Unity Ads SDK to validate your age gate mechanism, or how the relevant signal information gets translated and passed to Unity for processing.

Nonbehavioral metadata API implementation

Unity (C#) example

// If the user opts out of personalized ads:
MetaData userMetaData = new MetaData("user");
userMetaData.Set("nonbehavioral", "true");
Advertisement.SetMetaData(userMetaData);

// If the user opts in to personalized ads:
MetaData userMetaData = new MetaData("user");
userMetaData.Set("nonbehavioral", "false");
Advertisement.SetMetaData(userMetaData);

Note: You must commit the changes to the MetaData object for each value before trying to set another value.

Android (Java) example

// If the user opts out of personalized ads:
MetaData userMetaData = new MetaData(this);
userMetaData.set("user.nonbehavioral", true);
userMetaData.commit();

// If the user opts in to personalized ads:
MetaData userMetaData = new MetaData(this);
userMetaData.set("user.nonbehavioral", false);
userMetaData.commit();

Note: You must commit the changes to the MetaData object for each value before trying to set another value.

iOS (Objective-C) example

// If the user opts out of personalized ads:
UADSMetaData *userMetaData = [[UADSMetaData alloc] init];
[userMetaData set:@"user.nonbehavioral" value:@YES];
[userMetaData commit];

// If the user opts in to personalized ads:
UADSMetaData *userMetaData = [[UADSMetaData alloc] init];
[userMetaData set:@"user.nonbehavioral" value:@NO];
[userMetaData commit];

Note: You must commit the changes to the MetaData object for each value before trying to set another value.

If a user takes no action to confirm their age (for example, they close a prompt), we recommend that you re-prompt them at a later time. Users with an undefined individual age-restricted status will see ads consistent with the default behavior as defined in the Monetization dashboard.

CARU compliance

The Children’s Advertising Review Unit (CARU) promotes responsible advertising and privacy practices to children under the age of 13. To assist with our customers’ compliance with CARU guidelines, all COPPA ads have a watermark that identifies the ad as an “Advertisement” and have bolded the exit and skip buttons.

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