Formerly NFQES · eIDAS Qualified Trust Service Provider
Sign anywhere
Trust everywhere
4SIGNER is a complete platform for electronic signing at every eIDAS level. Sign from your phone, desktop, or smart card. No printer. No post. No waiting.
14 countries
Clients across 14 countries
4 clicks
4 clicks to a signed contract
3.2 M
Documents signed
4 levels
Of signature under eIDAS
CERTIFIED BY
Complete e-signature solutions for every need
01 / 04
4SIGNER Platform
Sign, validate, archive and deliver documents from any device, at every eIDAS level. No hardware needed.
02 / 04
E-sign certificates
We issue your QES certificate directly. No third party, no per-signature fees. One flat price, unlimited signatures.
03 / 04
SaaS API
Embed signing into your own product in days. Eight API endpoints covering the full signing lifecycle.
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Enterprise solutions
Full signing infrastructure deployed on your servers or operated by us. Hardened HSM, archive, mobile clients.
Why choose 4SIGNER
Benefits that drive results
Your clients and employees start signing in minutes. No training, no hardware, no paperwork.
Save energy, time & money
Every contract signed in 4 clicks. No printing, no scanning, no postal mail. Your team gets hours back every week.
Security you can prove
Regularly audited as an EU certification body. Every signature is tamper evident, timestamped, and legally binding across EU.
Go fully paperless
Replace your entire paper signing workflow in days. No more archiving boxes, no more courier costs, no more lost contracts.
Improve quality
Reduce manual errors and keep every document consistent. Clearer processes help your team deliver better results with less effort.
Platform features
Everything you need to sign, send and store documents
01
Signing
Every eIDAS signature level in one place. Pick the right one for every document.
02
Validating
Verify any signed document instantly. Free, fast, no account needed.
03
Electronic mailbox
Send, receive and sign documents in one place. No more email attachments.
04
History
Every document you ever signed, searchable in seconds. 3 years of signing history.
05
Timestamps
Prove exactly when a document was signed. No notary. No delays.
06
Graphic signature
Add your personal signature mark to every document. Looks professional, stays legal.
07
Archive
Your signatures never expire. Documents are automatically re signed every year.
08
Two-factor verification
Extra layer of identity verification on every sign in and signing action.
09
Certificates on the card
Your certificate on a physical smart card. Sign on any eIDAS compatible platform.
The only platform that issues every level of signature itself
From a simple digital signature to a qualified one with the same legal weight as a handwritten signature. No third party. No dependency. Just pick the level that fits your document and sign.
Digital
Simple e-signature
Basic legal standing
Electronic
Standard signature
Verifiable intent
Advanced
Advanced electronic signature
Linked to signer
Qualified
Qualified electronic signature
Equivalent to handwritten
Sign with Smart Card
Traditional high-security hardware solution. Ideal for workstations and dedicated terminal signing.
- Physical hardware token
- Works offline locally
- Multi-certificate storage
Sign without a card
Maximum mobility. Use our mobile app to authorize signatures using biometric authentication (FaceID/Fingerprint).
- 100% Mobile access
- Biometric security
- Cloud-based storage
TRUSTED BY INDUSTRY LEADERS
"I was impressed by their agile approach, solution-oriented proposals, and constant availability. The result of the new client zone is an improved user experience for our clients and streamlined processes within our company."
„Communication with BRAIN:IT was very professional. The entire implementation process into BVS was carried out according to the project timeline, and from our perspective, the whole project resulted in a very positive evaluation.“
"Our reception team appreciates this method, as it has eliminated a significant amount of work for them. At the same time, our customers no longer have to wait in line to sign documents."
"I was impressed by their agile approach, solution-oriented proposals, and constant availability. The result of the new client zone is an improved user experience for our clients and streamlined processes within our company."
„Communication with BRAIN:IT was very professional. The entire implementation process into BVS was carried out according to the project timeline, and from our perspective, the whole project resulted in a very positive evaluation.“
"Our reception team appreciates this method, as it has eliminated a significant amount of work for them. At the same time, our customers no longer have to wait in line to sign documents."
Start signing
the right way
Free to try. No card required. Full qualified-signature workflow available on every plan from day one.