What is an electronic signature?
An electronic signature (e-signature) is any electronic indication of intent to agree to a document — typically a typed name, a drawn signature, or a click — captured together with a record of who signed, when, and from where. For everyday business agreements it carries the same legal weight as a handwritten signature in most countries.
How an electronic signature works
The signer opens a secure link, reviews the document, and signs from any device. The platform records their identity (name and email), the time, their IP address, and a tamper-evident copy of the signed document — together forming an audit trail that proves the signature.
Electronic vs. digital signature
“Electronic signature” is the broad legal term for signing electronically. A “digital signature” is a specific cryptographic technique (using certificates) often used to secure or seal the document. Many e-signature tools, including okdoc, apply cryptographic sealing to the finished PDF.
Types of electronic signature
Standards such as the EU's eIDAS define simple, advanced, and qualified electronic signatures — increasing in identity assurance. Most business use cases (quotes, contracts, NDAs) are well served by a simple or advanced electronic signature with an audit trail.
When you need more
Some regulated documents (certain notarial or government filings) require a qualified electronic signature backed by a certified provider. For everyday commercial agreements, an advanced electronic signature with identity verification and an audit trail is the standard.
Frequently asked questions
Is an electronic signature legally binding?
In most countries, yes — laws such as the U.S. ESIGN Act and the EU's eIDAS regulation give electronic signatures the same legal standing as handwritten ones for typical business agreements.
What's the difference between an electronic and a digital signature?
An electronic signature is the legal concept of signing electronically; a digital signature is a cryptographic method used to secure the document. They are often combined.
What makes an e-signature valid?
Clear intent to sign, the signer's identity, association of the signature with the document, and a retained record (audit trail) — all of which okdoc captures automatically.
Can I use an electronic signature on a contract?
Yes. Contracts, quotes, NDAs, and most commercial agreements can be signed electronically. okdoc adds a full audit trail and a sealed PDF.
How do I sign a document electronically?
Open the secure signing link, review the document, and sign by drawing, typing, or clicking — from any device. With okdoc you can also create the document with AI first.