Secure signatures for teams that move fast

Easy to use, fully legally binding & timestamped esignatures

Launch faster with zero setup headaches, lightweight tools, and transparent pricing. Keep signatures and documents private, and stay in PDF from start to finish.

Track Record

Powered by the proven Trust1Sign security stack

Sign began as a forever-free local app that refuses to ship your identity or documents to the cloud. It was built for high-security teams who trust Qualified Electronic Signatures and demand real ownership of every PDF.

Back ground

Sign is designed to be used and is used in high-security environments where sharing documents or identities is not appropriate. It is a simple FREE tool for signing PDFs locally, so your files stay on your PC.

The core stack combines the eSIG DSS reference implementation with Trust1Connector, Truststore and Smart-ID so local signing is seamless and non-centralised.

Benefits

  • No more printing, signing and scanning.
  • Keeps your identity and documents safe while lowering your carbon footprint.
  • Signs only with the highest security level: Qualified Electronic Signatures.
  • Very small 10 MB app that runs locally and consumes minimal energy.
  • Compliant with the highest security standards and European regulations.

Sign API

  1. Buy a licence key.
  2. Link your system via API.
  3. Roll out Sign across your organisation.

Testimonials

Real-world signing stories from the field

Independent lawyer

“I want to sign quickly without losing control of my files.”

This is your world

  • You print, sign and scan important documents because digital systems feel slow and clumsy.
  • You’re not fully convinced existing tools are watertight if there’s ever a dispute.
  • You don’t like the idea of your client files being stored ‘somewhere out there’.

What Trust1Sign does for you

  • Sign directly on your own PC with your Belgian eID (and card reader).
  • Every signature gets a certified timestamp and a clear audit trail.
  • The signed PDF is stored in your own digital vault – not on someone else’s server.
  • When you’re ready, switch to Smart-ID on your smartphone for even faster signing.

You keep full control of your documents, but drop the printing and scanning from your day.

👉 Core (Free) – upgrade to Growth if you sign frequently.

Small law firm

“Clients sign from home, we get the document back automatically.”

This is your world

  • A lot of documents must be signed by both you and your clients.
  • Clients still come to the office “just to sign”, slowing cases down.
  • Digital signing exists, but you’re unsure what happens to your documents afterwards.

What Trust1Sign does for you

  • You and your clients sign with eID or Smart-ID, from the office or at home.
  • The signed document is automatically returned to your firm’s Trust1Sign vault.
  • Documents are not stored anywhere else – you remain the owner.
  • Legal assistants can prepare files, send them to clients, and follow progress.

You remove “signing appointments” from your calendar and speed up every procedure.

👉 Growth – enough for an active small practice.

Large law firm partner / senior lawyer

“We need signatures we can defend in court, at scale.”

This is your world

  • You manage many lawyers and legal assistants working on parallel cases.
  • Signatures and approvals must be traceable, defensible and auditable.
  • You want to digitise more, but without losing control over client files.

What Trust1Sign does for you

  • Firm-wide PC app and signing flows based on eID, Smart-ID and PKCS#11 tokens.
  • Certified timestamps and a clear audit trail for every signature.
  • Truststore gives you a structured archive for signed documents and audits.
  • API lets you integrate signing into your existing DMS / case management.

You standardise how the whole firm signs, without compromising on legal certainty.

👉 Unlimited (Pro/Enterprise level) – depending on volume and integration needs.

Real estate agent

“Sign deals faster than the buyer changes their mind.”

This is your world

  • Clients come to the office just to sign mandates, rental and sales contracts.
  • Every delay between “yes” and “signature” is a risk.
  • You’ve tried digital signing, but you’re not sure it stands up in a dispute.

What Trust1Sign does for you

  • Send documents to clients to sign from home or on the go with eID/Smart-ID.
  • Both the seller and buyer/tenant can sign remotely and legally.
  • Signed contracts return automatically to your digital vault as PDFs.
  • You know that every signature is backed by certified timestamps and strong identity.

You close mandates and deals faster, without sacrificing legal certainty.

👉 Unlimited – ideal for busy agencies with many contracts per month.

Trust1Sign Commercial Bundles

Explore Trust1Sign’s commercial bundles at a glance

Build, deploy, and scale with legally enforceable signatures tailored to your operation. Choose the bundle that matches your device policy, validation needs, and growth pace.

Core

For starters

Free

Up to 10 seats | 200 GB storage | eID + Smart-ID

  • PC + reader and Smart-ID flows
  • Belgian eID and Nordics eID ready
  • PKCS#11 token support
  • Unlimited transactions

Growth

Most popular

€19/month

20 seats | 500 GB | eID + Trust1Verification

  • PC + Smart-ID and reader signing
  • Belgian and Nordics eID coverage
  • Truststore and Trust1Verification included
  • 100 transactions per month

Unlimited

Scale-ready

€95/month

Unlimited seats | 2 TB | PKCS#11 tokens + API

  • PC, Smart-ID, and reader signing at scale
  • PKCS#11, Belgian eID, Nordics eID
  • API access, Truststore, Trust1Verification
  • 750+ transactions per month

Let's talk

Ready for a signing flow that fits your org?

Tell us about your team, devices, and compliance needs. We'll map the right Trust1Sign bundle and migration steps.

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