Google just gave Gemini access to your entire digital life, and most people are going to say yes without thinking about it.
At I/O 2026, the company rolled out Personal Intelligence, a feature that lets Gemini read your Gmail, Photos, and other Google services to give answers shaped around you. It's expanding to nearly 200 countries and reaches the roughly 900 million people who use Gemini each month.
Josh Woodward, head of Google Labs, showed what it looks like in practice. He asked Gemini what tires to buy for his car, and rather than spitting out generic specs, it pulled the part number from a photo buried in his Google Photos and suggested options based on how he actually drives. For a family vacation, he said Gemini read through his Gmail and Photos to figure out what his kids enjoy, then skipped the tourist traps and recommended an overnight train ride along with board games for downtime. The demos are genuinely impressive, and that is the entire point.
This kind of usefulness depends on Gemini knowing a lot about you, which Google is pretty open about wanting.
"We think there's a huge opportunity for our AI to know you better and then be uniquely helpful because of that knowledge," Robby Stein, VP of Product for Google Search, said on the Limitless podcast in November.
Here's where it gets messy. The data Google already has on you was handed over for specific reasons. Gmail was for sending emails. Photos was for storing pictures. Maps was for getting around. Personal Intelligence pools all of that into a single assistant that moves information across products in ways the original sign-up never contemplated. Miranda Bogen, who runs the AI Governance Lab at the Center for Democracy and Technology, said it well: "Now it's all getting put into one big blob and moved back and forth across different products," making it "harder and harder to keep track of what's even happening, let alone draw lines around what's appropriate."
Google does offer controls. Connected apps are off by default, you can disconnect them anytime, and the company says it isn't training models directly on the contents of your Gmail or Photos. You can also run temporary chats that bypass personalization entirely. The problem is how easy those controls are to find. Dr. Harry Brignull, the researcher who coined the term "dark pattern" back in 2010, has pointed out that companies tend to roll out features like this by framing the opt-in as the benefit and tucking the opt-out somewhere inconvenient. Even with your chat history turned off, Google holds onto your Gemini conversations for 72 hours, and the default retention is 18 months.
INTO THE VALLEY:
The interesting question isn't whether Personal Intelligence is useful. The demos prove it is, and most people will trade some privacy for an assistant that actually remembers their kid hates museums. The question is whether 900 million people are going to think for more than a second before tapping the consent button. Probably not, because Google isn't really asking for new data here. It's asking permission to finally put a decade of data you already handed over to a use you didn't sign up for. That might be the deal of the century or the moment we stop pretending consent in tech means much of anything, and it's likely going to be both at the same time.
