Roblox Rolls Out Selfie-Based Age Estimation Tech

Bloomberg TechnologyAbout 4 min readJul 18, 2025Watch original
THE SUMMARYAI-generated

Roblox's DTAC and Age-Based Communication: A Deep Dive

Key Concepts:

  • DTAC (Dynamic Trust and Age-based Communication): Roblox's vision for age-appropriate communication, especially for teens (13-17).
  • Trusted Connections: Identifying and verifying friends and trusted individuals within the Roblox platform.
  • Age Estimation: Using AI to estimate a user's age, enabling more open communication within trusted connections.
  • Text Moderation: Scanning text for harmful content, even within trusted connections.
  • Concurrent Players: The number of players actively playing a game simultaneously.
  • AI Moderation: Using artificial intelligence to moderate content.
  • Human Moderation: Using human moderators to review content.

1. Introduction to DTAC and Age-Based Communication

  • Roblox has been innovating on safety and stability for almost 20 years.
  • DTAC is Roblox's vision for age-based communication, specifically targeting teens aged 13-17, a vulnerable age group.
  • DTAC focuses on two key elements:
    • Trusted Connections: Identifying friends and people users know and trust.
    • Age Estimation: Using AI to estimate age and enable freer communication within trusted connections, while still monitoring for critical harms.
  • The goal is to keep users on the Roblox platform by allowing them to communicate more freely in a monitored environment, preventing them from migrating to less safe platforms.

2. AI Accuracy and Conservative Implementation

  • Roblox has been innovating in AI for over four years and runs over 200 AI systems.
  • They have open-sourced their voice moderation system due to its effectiveness.
  • The AI used for age estimation is "really good" but not perfect.
  • Roblox is leaning conservative in its implementation, prioritizing safety.
  • Age estimation is used to enable freer communication that is still monitored.

3. Moderation and Communication Freedom

  • Historically, all text, voice, and images on Roblox have undergone moderation, including both AI and human review.
  • Age estimation is used to "slightly free up" communication within trusted connections.
  • Example: If two 14-year-olds are trusted connections, they might be able to call each other "butthead" without the message being blocked by hashtags.

4. Case Study: Grow a Garden

  • Grow a Garden is a popular game on Roblox, with over 20 million concurrent players at its peak.
  • Players want to hang out with friends and communicate within the game.
  • Previously, communication between 15-year-olds might have been restricted by hashtags and blocking.
  • With DTAC, if players are trusted connections and have validated their age through a selfie, they can communicate more freely.
  • This aims to improve the user experience and reduce the likelihood of users migrating to other platforms to share content.

5. Scale and Infrastructure

  • Roblox runs its own infrastructure and believes it achieves better performance, reliability, and cost by building its own data centers.
  • However, Roblox also partners with cloud providers like Azure, Amazon, NWC, and GCP to "burst into their cloud" during peak times.
  • This allows Roblox to handle peak traffic, such as Saturday mornings, by leveraging external resources.

6. Addressing Child Safety Concerns and Market Growth

  • Roblox has faced scrutiny regarding child safety.
  • The DTAC feature is seen as a significant step in addressing these concerns and enabling future growth.
  • Roblox aims to capture 10% of the market.
  • The company believes that trusted connections and age estimation are the future of communication on social platforms, especially for teens.
  • Roblox is proactively implementing these measures without waiting for legislation.
  • The 13-17 age segment is considered just as important as 13 and under and 18 and up.

7. Concurrent Player Records

  • Roblox had over 30 million people playing on the platform simultaneously a couple of weekends prior to the discussion.
  • Grow a Garden hit over 20 million concurrent players at one point.
  • Roblox believes that 20 million concurrent players is the largest number in the history of gaming, according to the Guinness Book of World Records.
  • Concurrent Players: The number of players actively playing a game simultaneously.

8. Notable Quotes

  • "We've been innovating on safety and stability for almost 20 years."
  • "We believe this is the future of communication on social platforms, especially for teens."
  • "We haven't been waiting for the law. We haven't been waiting for legislation."

9. Synthesis/Conclusion

Roblox's DTAC represents a proactive approach to creating a safer and more engaging communication environment for teenage users. By combining trusted connections, AI-powered age estimation, and ongoing text moderation, Roblox aims to strike a balance between allowing freer communication and protecting users from harm. The success of games like Grow a Garden highlights the importance of enabling social interaction within the platform, and DTAC is positioned as a key technology for achieving this while addressing child safety concerns and driving future growth.

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