Electronic Signature Examples: Typed, Drawn, Biometric, and Digital

Electronic signature examples include a typed name at the bottom of an email, a checked “I agree” box on a website, a signature drawn with a finger on a touchscreen, a fingerprint scan, and a cryptographic digital signature backed by a certificate authority. Federal law treats all of them as legally equivalent to ink on paper when the signer intended to sign. Under 15 U.S.C. § 7001, a signature or contract cannot be denied legal effect simply because it exists in electronic form, and the Uniform Electronic Transactions Act reinforces that principle across 49 states.¹ The federal definition is intentionally broad: an electronic signature is any electronic sound, symbol, or process attached to a record and adopted by a person with the intent to sign it.²

Typed Names

The simplest electronic signature is a typed name. Entering your full name or initials into a contract, email, or form field counts as a valid signature when you do it to show you agree to the content. Businesses close deals this way constantly: one party emails proposed terms, the other types their name at the bottom and sends it back. That typed name carries the same legal weight as pen on paper because the signer deliberately placed it there to finalize the record.

Federal court filings use a formal version of the same idea. When attorneys file documents electronically, a filing made through a person’s electronic-filing account, combined with that person’s name on a signature block, constitutes their signature under the Federal Rules of Civil Procedure.³ The “/s/” notation followed by a typed name has become standard shorthand on court documents for exactly this.

Click-to-Agree Buttons and Checkboxes

Every time you check a box labeled “I agree to the terms and conditions” or tap a button that says “Accept,” you are producing an electronic signature. These are often called clickwrap agreements, and courts regularly enforce them because the signer took a clear, affirmative step to express consent. The software logs the timestamp, the specific button or checkbox involved, and often the user’s IP address, creating a durable record of agreement without any handwriting at all.

Not every online agreement works that way. A browsewrap agreement buries a link to its terms at the bottom of a webpage and assumes you agreed just by continuing to browse. Courts are far more skeptical of those. Unless the website owner can show you actually knew the terms existed, a browsewrap agreement is often unenforceable. A checkbox you must click beats a footnote link every time.

Scanned or Drawn Signature Images

Some people want their electronic signature to look like a traditional handwritten one. The most common way to achieve that is to scan a signature from paper, save it as an image file, and insert the image into digital documents like leases, offer letters, or contracts. The image preserves the specific curves and flourishes of your handwriting in a format you can reuse across files.

A more dynamic version involves drawing your signature directly on a touchscreen with a finger or stylus. Signing apps and tablets record the motion in real time and produce an image that looks like wet ink. Either approach works legally, but image-based signatures are among the easiest to copy, which means they carry less inherent security than methods that verify identity through other channels. For anything high-stakes, pairing a scanned or drawn signature with an audit trail from a signing platform adds protection the image alone does not provide.

Biometric Signatures

Biometric signatures tie document authentication to something physically unique about you. A fingerprint sensor on a phone or laptop can capture your print and link it to a specific file. Voice recognition software can record a spoken confirmation and attach that audio data to a record. Iris scans work on the same principle, matching a biological feature that is extremely difficult to forge.

What distinguishes biometric signatures from other types is that the symbol or process attached to the record is derived from your body rather than from something you type, draw, or click. The system converts the biometric input into a data string that represents your approval. Because these traits are unique to each person, biometric signatures offer strong identity verification, though they also raise privacy concerns about how that biological data gets stored and who can access it.

Digital Signatures With Cryptographic Certificates

Digital signatures are a high-security subset of electronic signatures built on Public Key Infrastructure, commonly known as PKI. A trusted Certificate Authority verifies a person’s identity and issues them a digital certificate containing a public key and a corresponding private key.⁴ PKI uses asymmetric cryptography, meaning one key encrypts and only the other can decrypt.⁵

When you digitally sign a PDF or email, the software generates a unique hash of the document’s contents and encrypts that hash with your private key. The recipient’s software then decrypts the hash using your public key and independently generates its own hash of the document. If the two hashes match, the recipient knows two things: the document was not altered after you signed it, and the signature really came from you.⁴ Changing even a single character in the document after signing produces a completely different hash, instantly revealing the tampering.

This is the only type of electronic signature that simultaneously proves the signer’s identity and guarantees the document’s integrity through math rather than trust. Government agencies, financial institutions, and organizations handling sensitive records tend to require digital signatures specifically because of that dual protection.

What Makes Any of These Legally Valid

The format matters far less than the intent behind it. A typed name, a fingerprint scan, and a cryptographic certificate all satisfy the law if the same core requirements are met. Both the federal ESIGN Act and the Uniform Electronic Transactions Act define an electronic signature as a sound, symbol, or process that a person executes or adopts with the intent to sign the record.² Two parts carry the weight: the signature must be attached to or logically associated with the record, and the signer must have intended it as their signature.

Intent is where disputes actually happen. An auto-populated name in an email header probably does not demonstrate intent to sign anything. Deliberately typing your name at the end of an email that says “I agree to these terms” almost certainly does. Courts look at the surrounding circumstances: did the person know what they were agreeing to, did they take a volitional step to indicate agreement, and can the action be connected to the specific document? A strong audit trail with timestamps, IP addresses, and records of what the signer viewed before signing makes it much harder for someone to later claim they never agreed.

The UETA adds one more baseline requirement: it applies only when both parties have agreed to conduct business electronically, whether explicitly or through their conduct.⁶ If someone has never consented to electronic transactions, you cannot bind them with an e-signature they did not agree to use in the first place.

Documents Where These Examples Do Not Work

Federal law carves out specific categories of documents where electronic signatures have no legal effect, regardless of format. These exclusions sit in 15 U.S.C. § 7003 and apply even when both parties would prefer to sign electronically.⁷

Wills, codicils, and testamentary trusts. Some states have begun allowing electronic wills under separate state laws, but the federal ESIGN Act does not cover them.
Adoption, divorce, and other family law matters.
Most Uniform Commercial Code transactions, including negotiable instruments and secured transactions under UCC Articles 3 through 9. Sales contracts under Articles 2 and 2A are the exception and can use electronic signatures.
Court orders, notices, briefs, pleadings, and other writings required in connection with court proceedings. Courts have their own electronic filing rules that govern signatures on those documents separately.
Cancellation or termination notices for utility services such as water, heat, and power.
Notices of default, foreclosure, eviction, repossession, or the right to cure under a credit agreement or rental agreement for a primary residence.
Termination notices for health insurance benefits or life insurance benefits, other than annuities.
Recall notices or notices about material product failures that endanger health or safety.
Paperwork that must accompany the transportation or handling of hazardous materials, pesticides, or toxic substances.

The common thread across these exclusions is consumer protection. Congress decided that for high-stakes situations where someone could lose their home, their insurance, or their safety, the convenience of electronic delivery was not worth the risk that a critical notice would go unread in an inbox.⁷

1
Office of the Law Revision Counsel. 15 USC 7001 – General Rule of Validity
2
Office of the Law Revision Counsel. 15 USC 7006 – Definitions
3
Legal Information Institute. Federal Rules of Civil Procedure Rule 5 – Serving and Filing Pleadings and Other Papers
4
CISA. Understanding Digital Signatures
5
IDManagement.gov. Public Key Infrastructure 101
6
Uniform Law Commission. Uniform Electronic Transactions Act
7
Office of the Law Revision Counsel. 15 USC 7003 – Specific Exceptions