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Privacy & AIJune 5, 20266 min read

The prompt is the new fingerprint

You can change your password. You cannot change the way you think. Your query history identifies you more precisely than your name does.

What your queries reveal

A month of prompts quietly encodes your profession, your city, your income band, your health anxieties, your relationship status, and your mood on any given Tuesday. Researchers call this re-identification; advertisers call it a segment.

Unlike a cookie, you cannot clear it. The signal is not a token in your browser — it is the shape of your curiosity.

Anonymous is not the same as unidentifiable

  • Removing your name from a query log does very little — writing style plus topic mix is often enough to single out one person.
  • Session stitching links your "anonymous" queries across days into one behavioural fingerprint.
  • Every account-based assistant ties that fingerprint to a verified identity by design.

Zero identity as architecture

The only fingerprint that cannot be matched is the one that is never collected. Desktop-mode ZSearch requires no login, sends no telemetry of your questions, and keeps the query history in a local database you can open, audit, or wipe.

Privacy policies ask you to trust a promise. Architecture removes the need for one.

Keep your documents — and your questions — yours.

ZSearch is a sovereign AI workspace that runs on your machine. Zero egress, no profiling, any model.

Download ZSearch