Documents you sign every day
- Civil and commercial contracts
- Non-disclosure agreements (NDAs)
- Powers of attorney and authorizations
- Settlements and agreements
How Lawyers use it
When you take on a new case
The engagement agreement and fee terms go out by email the same day; the client signs before the first billable consultation.
During negotiations
You send NDAs, letters of intent or transactional agreements to several parties at once, each with their own link, signing in order if the case requires it.
When you close the file
The final document carries a signing certificate, the PDF's digital fingerprint and a case folio — solid evidence if the agreement is ever challenged.
Before and after Firmiu
Why choose Firmiu
Evidentiary value
IP, location, device, timestamp and verification on every signature back the document.
Remote signing
Your clients sign from anywhere, with no need to visit the office.
Organized documents
Review the signature history and download signed PDFs whenever you need them.
How Firmiu works
Upload your PDF
Upload the document and enter the name and email of the person who must sign.
The signer receives a link
They get an email with a unique link and a verification code.
Signed document
The PDF is signed with its audit trail, ready to download.
Frequently asked questions
- Does a contract signed with Firmiu work as evidence?
- Yes. Electronic signatures are admissible as evidence, and Firmiu's audit trail strengthens their evidentiary value.
- Can I sign agreements with clients in another country?
- Yes. Electronic signatures are recognized across Latin America, Spain and the US; see our country pages.
- Is document storage secure?
- Yes. PDFs are stored encrypted and only accessible through temporary signed links.
- Can I set the order in which parties sign a contract?
- Yes. Firmiu supports parallel signing (everyone gets the link immediately) or sequential signing (each party signs in the order you define).
- Does the audit trail hold up as evidence in court?
- Yes. Every signature records IP, device, date and a verification code, plus the document's digital fingerprint — the kind of evidence typically required to prove authorship and integrity.
- Can I sign agreements with parties in different countries?
- Yes. Each signer gets their link in their own language and signs from wherever they are, no need to coordinate schedules.
Guide reviewed and updated: July 2026.
Electronic signatures in your country
Related guides
How to sign a non-disclosure agreement (NDA) online
Before sharing sensitive information, sign the NDA. Here's how to do it online in minutes.
Types of electronic signature: simple, advanced and qualified
Not all electronic signatures are the same. Here are the three levels and which one you need for each document.
Does an electronic signature replace a notary?
A common question before signing online: do I need a notary? Here's the answer.
Digital signatures for other professions
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