For professors
You already know detectors don't work. This is what you can actually see.
When a student writes in Trazado, a record of how they did it remains: how long, in how many sessions, what they typed and what they pasted, which sources they consulted and what they accepted from the AI. When they submit, they send you a link. It opens without an account and reads in two minutes.
Free for professors. No new platform, no LMS integration, no account.
Authorship Passport
Multidimensional poverty in Mexico: a reading of the CONEVAL 2022 report
Argumentative essay · Social economics · 1,840 words
Record intact
The chain of events has no gaps or later modifications. Trazado can vouch for what happened inside the editor; not for what happened outside.
- Active time
- 4 h 12 m
- 7 sessions over 9 days
- Typed by hand
- 91%
- 9% pasted, all explained
- Sources
- 5 of 5
- verified by DOI or URL
- Citations
- 11
- each linked to a passage
- AI accepted
- 3 changes
- 48 words · level 2 allowed
How the text grew (each bar is a session)
Why we stopped asking for percentages
It isn't our opinion. The universities that invested most in detectors were the first to switch them off, for the same reasons you already sense in your own classes.
Vanderbilt switched off Turnitin's AI detector in 2023. With a 1% false-positive rate it would have flagged about 750 of its 75,000 papers a year as AI-written when they weren't.
Vanderbilt University, August 2023Detectors classify as AI more than half of the essays written by people whose first language isn't English. With native speakers' texts they almost never fail.
Liang et al., Patterns, 2023Nine out of ten college students in Latin America already use AI to study. Banning it isn't a policy; saying how much and what for is.
Tec de Monterrey, study with 30,000 participants, 2025A percentage can't be defended in an appeal or explained to a parent. A process record can: it opens, it reads, and everyone draws their own conclusions. And since there's no classifier, there's no bias by writing style, language level or the student's mother tongue.
How it's used in a course
- 1
Put one line in the rubric
Say that the paper is written in Trazado and which AI level you allow, from 1 to 5. That's all that changes in your course.
- 2
The student submits a link
When they finish, they generate their Passport, decide which sections to include and send you the link along with the usual PDF or Word file.
- 3
You open it and read for two minutes
No account or installation. The six numbers are at the top; below, you can watch the essay grow session by session, with marks where text was pasted or an AI change was accepted.
The line for your rubric
Copy it as is or adjust the level. Students see it in Trazado when they start and the Passport reports against that level.
“Write your paper in Trazado (trazado.app) and attach the link to your Authorship Passport to your submission. AI level allowed for this assignment: 2 (planning and understanding, not drafting).”
- Level 1
- No AI
- Level 2
- Plan and understand
- Level 3
- Collaborate
- Level 4
- Draft with review
- Level 5
- Exploratory
AI Assessment Scale (AIAS, Perkins and Furze), the one UNAM's assessment guide recommends.
What the Passport doesn't do
We'd rather tell you ourselves than have a student discover it in an appeal.
- It's not a detector. It doesn't compute percentages or say “a machine wrote this”.
- It doesn't know who was at the keyboard. It knows what happened inside the editor and when.
- It doesn't see what happens in other tabs, on the phone or in a notebook.
- It doesn't decide. It describes a process; the reading and the judgment are still yours.
Privacy you can explain in class
Turnitin Clarity and Grammarly Authorship sell something similar, and both were criticized for surveillance. We draw the line somewhere else.
- The record starts when the student writes in Trazado and ends there. No keystroke logging outside the editor, no camera, no screen.
- The student owns the record. They generate the link, choose which sections to include, set an expiration date and can revoke it.
- The text of the essay doesn't travel in our metrics. We count sessions and words; we never read what it says.
- We don't sell data and we don't show ads. For professors it's free, always.
Privacy Notice (in Spanish) · Exactly what the Passport contains
Shall we try it in one course?
We're looking for professors who want to measure, not just try: one course, two sections, one long essay. One section submits with a Passport and the other as usual. At the end we compare review time, disputes and how many students shared the record when it was voluntary. If the results are worth it, we write them up together.
Trazado is built by one person in Mexico. If you write, I'm the one who answers.
— Oscar, founder of Trazado