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Precursor Trace

Precursor Trace (precursor-trace.cloudflare.app) is a live interactive demo that shows how Cloudflare's Precursor would assess your cursor movements using (part of) its detection mechanism. It surfaces the involuntary micro-behaviors that separate human from bot: whether you are accelerating or correcting yourself, and the rhythm and texture of your cursor movement — "all things you've probably never thought about as a real human being interacting with a computer."

Purpose

Precursor Trace is a public, educational exposure of the behavioral-tell analysis that underpins Precursor. It deliberately reveals only part of the detection mechanism, letting anyone on the Internet see cursor-movement analysis in action without disclosing the full Precursor model.

Relationship to other systems

  • systems/precursor — the production continuous behavioral-detection system Precursor Trace demonstrates a slice of.

Seen in

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