What electronic signature means
An electronic signature is any electronic means of indicating that a person adopted a document.
It covers a range: a typed name at the foot of an email, a scanned image of a handwritten signature pasted into a document, a signature drawn on a touchscreen, and a signature applied through a platform that records who signed, when, and from where.
Those are not equivalent in evidential value even though they may all be valid in principle. What distinguishes them is what can be proved afterwards.
Nigerian law recognises electronic signatures. The Evidence Act 2011 provides for the admissibility of electronically generated evidence and addresses the proof of electronic signatures, so a document signed electronically is not excluded simply because of how it was signed.
What the law does not do is dispense with formality requirements that exist for particular documents, and that is where the practical limits sit.
How it is used
For ordinary commercial contracts, electronic signature is now normal Nigerian practice.
Supply agreements, service contracts, non disclosure agreements, engagement letters, purchase orders, employment contracts and consultancy agreements are routinely signed electronically, and businesses that insisted on wet ink for everything have quietly stopped.
What makes an electronically signed contract hold up is the evidence around it.
Use a platform that produces an audit trail recording the signatory, the time, the email address used and the document version, rather than pasting an image into a document.
Confirm the signatory's authority, because an electronic signature applied by somebody without authority binds nobody.
Keep the executed version and the audit certificate together, and store them somewhere the business controls.
And where the counterparty is unfamiliar or the value is significant, confirm by a separate channel that the person who signed is who they appear to be. Business email compromise is a real Nigerian risk, and an electronically signed document from a compromised email account is a familiar route to a fraudulent payment instruction.
Key features
- Any electronic means of indicating adoption of a document
- Recognised in Nigerian law, with the Evidence Act addressing admissibility and proof
- Evidential value depends on the audit trail, not on the appearance
- Ordinary commercial contracts are routinely signed electronically
- Does not dispense with formality requirements for particular documents
- Authority of the signatory matters as much as the signature itself
How this works in Nigeria
The categories where caution is warranted are the ones involving land, deeds and testamentary documents.
Deeds require execution with formality, including signature, witnessing and delivery, and Nigerian conveyancing practice, the lands registries and the consent process operate on physical documents with wet ink and attestation. A deed of assignment signed electronically is not going to move smoothly through stamping, consent and registration.
Wills carry statutory execution requirements including signature and witnessing, and they should be executed physically.
Documents requiring notarisation or an affidavit involve appearing before an officer, which is a physical act.
Court documents follow the rules of the particular court, and while electronic filing has expanded, the requirements should be checked rather than assumed.
For everything else, the practical Nigerian position is that electronic signature is accepted and widely used, and the risk is evidential rather than legal. A dispute about an electronically signed contract will turn on proving who signed it, which is why the platform and the audit trail matter more than the format of the mark.
Banks and regulated institutions maintain their own requirements for particular instruments, so a business dealing with them should ask rather than assume.
Typed name vs scanned image vs platform signature
Three electronic signatures with very different evidential strength.
A typed name at the end of an email can be sufficient in principle, and it proves little. Anyone with access to the account could have typed it, and the account itself may have been compromised.
A scanned image of a handwritten signature pasted into a document looks like a signature and is the weakest of the three evidentially. The image can be copied from any other document the person ever signed.
A platform signature records the signatory's identity, the time, the email address, the device and the document version in an audit certificate. It is what allows a party to prove, months later, who signed and when.
For anything of value, use the third. The cost is small and the difference in a dispute is the difference between proving execution and asserting it.
Limits and risks
Formality requirements are not displaced. Deeds, wills and documents requiring notarisation or attestation continue to be executed physically, and land transactions run on physical documents through stamping, consent and registration.
Evidential weight also varies enormously between methods, and a pasted image proves very little.
Authority is a separate question. A signature applied by somebody without authority binds nobody, however well the platform recorded it.
Fraud is the practical risk. Compromised email accounts producing apparently signed documents and altered payment details are a recurring Nigerian loss, and no signature technology addresses it. Verification by a separate channel does.
And counterparty requirements vary, so a regulated institution may insist on wet ink regardless of what the law permits.
Worth knowing
Verify any change of bank details by telephone on a number you already hold, even where the instruction arrives on a properly signed document. Nigerian business email compromise produces genuine looking signed documents from compromised accounts, and the signature is not the weak point, the account is.
Questions people ask
Are electronic signatures valid in Nigeria?
Yes for most documents. The Evidence Act 2011 provides for the admissibility of electronically generated evidence and addresses the proof of electronic signatures, so a document is not excluded because of how it was signed.
Which documents still need wet ink?
Deeds, which require signature, witnessing and delivery, wills with their statutory execution requirements, and documents requiring notarisation or an affidavit. Land transactions in practice run on physical documents through stamping, consent and registration.
Is a typed name in an email a signature?
It can be sufficient in principle, and it proves very little. Anyone with access to the account could have typed it, which is why a platform with an audit trail is used for anything of value.
What makes an electronically signed contract hold up?
The audit trail: a record of who signed, when, from what email address and on which document version, kept with the executed copy. That is what allows execution to be proved months later.
Does an electronic signature prove authority?
No. A signature applied by somebody without authority to bind the company binds nobody, however well the platform recorded it. Confirm authority separately for significant contracts.
Is it safe for high value transactions?
The signature is rarely the weak point. Compromised email accounts producing genuine looking signed documents are, so verify identity and any change of payment details through a separate channel you initiate.