Do I need to install an application?

No, signing happens directly in your browser from the received link. A mobile application exists for added convenience, but it remains optional.

Is drawing my signature in a PDF reader enough?

No. A signature drawn in a reading app is just an image, with no enforceable legal value. Use a compliant platform for a true electronic signature.

Can I use an S Pen stylus?

Yes, on compatible Samsung devices the S Pen works perfectly for drawing your signature, just like your finger.

Is a signature from Android as valid as on a computer?

Yes, the legal value is identical. It's the compliant signature procedure that matters, not the brand or model of the device.

Can I have another person sign on my tablet?

Yes, you can present the document at a meeting and have your contact sign directly on your screen.

Practical guide

Sign a document on Android

An urgent document to sign from your Android smartphone or tablet? You can do it in a few seconds, in full compliance, without printing or scanning anything.

Updated on July 31, 2026

Legal value & compatibility

Signing from an Android device has exactly the same legal value as a signature made on a computer. Caution: drawing a signature in a PDF reader or with your gallery's drawing tool only produces an image, without enforceable proof. For a recognized signature, you go through a compliant platform, accessible from your browser or a mobile application.

To move from theory to practice, discover the Certyneo electronic signature solution and its offer dedicated to your sector — eIDAS compliant, no installation required.

Electronic signature is equivalent to a handwritten signature (article 25 of the eIDAS regulation), regardless of the device.
Drawing a signature in a PDF reading app does not constitute an enforceable eIDAS signature.
By signing via a compliant platform, each signature is timestamped and sealed from your mobile.
A complete proof file (identity, date, file fingerprint) is kept and enforceable in case of dispute.

Frequent use cases

Sign a contract received by email while on the move.

Validate a quote or work order in the field.

Sign a lease or mandate from home, without a printer.

Countersign a certificate or authorization urgently.

Have a client sign on your tablet during an appointment.

Approve an HR document (amendment, expense report) while traveling.

How to sign on Android in 4 steps

1
Open the signature link
Tap the link received by email or SMS. The document opens in Chrome or your Android browser, with nothing to install.
2
Review the document
Scroll through the document to read it entirely before signing, with pinch zoom to verify details.
3
Add your signature
Tap the signature area, then draw your signature with your finger or S Pen stylus, or choose from proposed signature styles.
4
Confirm and receive proof
Confirm your signature. The signed document and its proof file are sent to you immediately by email.

Frequently asked questions

Do I need to install an application?: No, signing happens directly in your browser from the received link. A mobile application exists for added convenience, but it remains optional.
Is drawing my signature in a PDF reader enough?: No. A signature drawn in a reading app is just an image, with no enforceable legal value. Use a compliant platform for a true electronic signature.
Can I use an S Pen stylus?: Yes, on compatible Samsung devices the S Pen works perfectly for drawing your signature, just like your finger.
Is a signature from Android as valid as on a computer?: Yes, the legal value is identical. It's the compliant signature procedure that matters, not the brand or model of the device.
Can I have another person sign on my tablet?: Yes, you can present the document at a meeting and have your contact sign directly on your screen.

→ Electronic signature guide · → How to sign a document · → Understanding the eIDAS regulation

Sign from your Android for free

Create an account in a few seconds and sign your documents wherever you are.

Certyneo Community

A question about electronic signatures?

Join the Certyneo community: ask your questions, share your answers and connect with thousands of users and our team.