Controlled AI use

Throw your most sensitive documents at any AI.
And still give nothing away.

ChatGPT, Claude, Gemini or internal: Psoydo sits in front of every AI and turns real identities into consistent tokens. The key stays with you.

How it works
GDPR-compliant Local-first AI-ready Local, on-prem or cloud
live pseudonymisation
Person Company Date IBAN / Address
protected
The core problem

Performance, legal certainty, cost: until now you only got two out of three.

Every option so far forces a trade-off. Psoydo is the first to deliver all three at once.

Public SaaS AI · ChatGPT, Claude, Gemini

Top performance, instantly available

But personal data and trade secrets leave the building.

PerformanceLegal certainty
Local / GDPR LLMs · on-prem

Legally safe and local

But performance lags miles behind the leading models.

Legal certaintyPerformance
Psoydo solves all three
Psoydo · best AI, protected

Use the best AI without real identities

Pseudonymisation before every AI interaction. Economical, local, compliant, and always the best model for the task.

PerformanceLegal certaintyCost-efficiency
The product

The mandatory protection layer between document and AI

Every document passes through Psoydo first. Only then does the AI see anything, and never a real identity.

Original document

Contract · mail · file

Psoydo

Detection & pseudonymisation

AI system

ChatGPT · Copilot · internal

Case-based

All files and mails of a case are processed together. Each person gets exactly one consistent pseudonym, across every document.

Context-aware

AI and rule-based detection separate person from company, month from name, technical term from personal data. No blind find and replace.

Fully local

Not a single byte leaves your infrastructure. No cloud, no external APIs, full data sovereignty. The key always stays with you.

Why Psoydo is unique

Pseudonymisation is a science, not a find and replace

The same word can be a person, a company, a place or a date. Only real contextual understanding can tell them apart. That is exactly what Psoydo does.

>99%
Detection accuracy
Context-aware detection instead of blind replacement: over 99 percent of sensitive terms are classified correctly and pseudonymised consistently. Whatever remains is caught by the review and the human visual check.
Myfair asked April, whether Aprils Myfair was really the Myfair of Myfair that April in April had handed over.”
Person Company Reference / date

One word, four times, each time something different. Rigid rules fail here. Psoydo recognises the role in context: same word, different role, different pseudonym.

A system that learns from its mistakes

No automated system is flawless. Psoydo makes errors visible, understands them and gets better with every case. In the end, a human always decides.

1

Detection

Pre-flight analysis and pipeline pseudonymise the case.

2

Review

Match list and risk candidates surface every borderline case.

3

Understand & feed back

The root cause is clarified and fed back into the system.

Visual review

The final, deliberately human check before release.

One click, instantly usable

Psoydo delivers not just data, but the finished prompt

No AI know-how needed. Pseudonymised text and matching prompt, paste both, result ready instantly. Afterwards the real identities are restored.

PACK 1Pseudonymised text
PERSON_001 beauftragte FIRMA_001 am DATUM_001 mit der Prüfung von ADRESSE_001 …
PACK 2Ready-made AI prompt
“You are a legal analyst. Analyse the following contract for liability risks. Give a structured summary …”
And not to be confused

Pseudonymisation is not redaction

Original

Dr. Maria Müller
Hauptstraße 12, München
IBAN DE89 3704 0044
Plain text with full personal reference.

Pseudonymised

PERSON_001
ADRESSE_001
IBAN_001
Reversible, the key stays local (GDPR Art. 4(5)). The analytical value is fully preserved.

Anonymised One click

Irreversible, for archiving and publication.
Anonymisation at the push of a button: turn pseudonymised data into permanently anonymous, irreversible documents with a single click, ready for archiving and publication.
Who stands behind Psoydo

Security is our craft, not our marketing

Psoydo does not come from an AI startup that stumbled onto compliance by accident. Over 120 companies trust wescaleIT when it comes to their information security.

For us, compliance is not a box ticked at the end, it is built in from the very first line of code. Psoydo withstands audits, reviews and the scrutiny of your data protection team, because we know these checks from daily practice.

Information security ISO 27001 expertise KRITIS experience Audit-proven
120+
companies trust us with their security
Configurable

Three protection layers that interlock

Psoydo protects not only personal data under GDPR, but also your trade secrets under the German Trade Secrets Act (GeschGehG). Each layer is steerable on its own.

1

GDPR base protection

Automatic · no configuration
  • People: name, title, role
  • Addresses: street, postcode, city
  • Contact data: email, phone, IBAN
2

Trade secrets (GeschGehG)

Company and industry specific
  • Internal terminology and contract numbers
  • Industry terms from legal, health, finance and more
  • Steered via a configurable matrix
Ready-to-use industry presets
LegalHRHealthcareIndustryFinanceIT
3

Project-specific anchor terms

Case-based · full control
  • Targeted exceptions per mandate
  • Case-specific special terms
  • Activatable per case, no system change
All three layers interlock: deterministic, reproducible, fully logged.
The foundation

Technical principles and audit readiness

Built for the strictest requirements: GDPR, trade secrets, KRITIS and defence.

Local-first

Processing exclusively in your own infrastructure. No data transfer to the outside. Suitable for KRITIS and defence.

Deterministic

Mathematically reproducible rules based on SHA-256. Same input, same pseudonym. Fully auditable.

Fully logged

Every step documented, immutable hash chains. Seamless for audit, compliance and certification.

Multilingual

German, English, mixed. Unsupported languages are flagged, no silent failure.

>99%
detection accuracy
>10.000
pages per case
6+
formats incl. OCR
100%
local, no plain text leaves
Who it's for

Where sensitive data meets high AI demand

For each of these industries there are ready-to-use presets already. Detection and pseudonymisation are tuned to your domain from day one.

Legal & compliance

Contracts, judgements, compliance cases with personal data, analysed by AI every day.

HR & people

Applications, performance reviews, salary data, highly sensitive and high in AI demand.

Healthcare

Patient data, findings, medical letters, under the strictest GDPR requirements.

Industry & engineering

Supplier contracts, project docs, trade secrets, where sharing is everyday business.

Finance

Credit files, audit reports, customer data, where regulation and AI potential grow together.

IT services

Tickets, project docs, support logs, where AI saves hours every day.

Use cases

What Psoydo makes possible

AI analysis on thousands of sensitive documents, without exposing any personal data. Pick a business area.

How it compares

Why Psoydo, and not the alternatives

Psoydo Public SaaS direct Local GDPR LLM Redaction / regex
Best available AI usable
Personal data stays protected
Analytical value & context kept
Consistency across many documents
Controlled re-identification possible
Economical at top quality
Audit-proof logging
Deployment

On your machine. On your server. In your cloud.

On your laptop

Single seat · local
  • Runs directly on the device
  • Local database, minimal effort
  • Ideal for consultants, law firms, specialists

On your server

On-premises · team
  • Multi-tenant, role and rights model
  • Team use and batch operation
  • Full control in your own data centre

In your cloud

Sovereign cloud · IONOS Frankfurt
  • Run by a German cloud provider
  • Scalable without your own hardware
  • Data never leaves Germany
Wherever it runs, the keys and data always stay with you.
Release Q3 2026 · early access limited

Be there before everyone uses it.
Best AI. Real identities protected.

Secure your spot on the early-access list. As soon as Psoydo is ready to launch, we will reach out to you personally.