Three tech giants, OpenAI, Adobe, and Microsoft, have united to support California's AB3211 bill, which requires tech companies to add labels to generated content to help identify works created by artificial intelligence (AI). Key provisions include adding watermarks in the metadata of AI-generated photos, videos, and audio clips, and large online platforms are required to label AI-generated content in a way that is easily understood by the general audience. This bill aims to address issues of information sourcing and enhance public understanding and trust in AI technology.