January 27, 2026

TOKYO, JAPAN, January 27, 2026 --- NTT DOCOMO, INC. announced today that it has developed a solution to streamline pre-publication advertiser review operations for Digital Out-of-Home (DOOH) advertising, including digital signage and large-format displays in public and urban spaces, in collaboration with LIVE BOARD, Inc.

The solution improves the efficiency of advertiser review processes conducted prior to DOOH ad distribution. By applying large language models (LLMs) to multiple review items that were previously handled manually, the solution is expected to reduce digital advertiser review workloads by over 30%.

DOOH advertiser reviews require checks against publicly available information on advertisers and compliance with various guidelines. As the volume of DOOH ad placements has increased significantly in recent years, review time and operational costs have become major challenges. DOOH ad reviews generally consist of two components: advertiser review and creative review. This newly developed solution focuses on streamlining advertiser reviews, which verify advertiser credibility as a prerequisite for DOOH ad distribution.

When using LLMs for advertiser reviews, two limitations arise: limited information freshness and limited access to external resources. The former refers to the difficulty of keeping information up to date, while the latter includes issues such as invalid URLs generated by LLMs. To address these challenges, DOCOMO developed this new solution by integrating five core technologies, enabling the AI to quickly obtain accurate and sufficient information for advertiser reviews.

Core Technologies of the Solution

1. 1. Web search-based grounding technology
2. 2. Automated generation of company profile research results
3. 3. Automated generation of legal compliance review results
4. 4. Automated generation of risk assessment results
5. 5. Automated generation of media-specific competitor analysis results

Going forward, DOCOMO aims to develop an AI-based technology to streamline creative reviews by applying AI to manual repetitive visual checks of video content for large public displays from the perspective of broadcast ethics and legal regulations. In addition, the company will continue to further enhance the efficiency of DOOH advertising review operations, aiming to refine advertising-related technologies and revitalize the advertising business. Through this, DOCOMO will pursue research and development to optimize the entirety of DOOH operations.