Guides
How to sign a document from your mobile phone
Sign a contract or NDA directly from your smartphone — no installation, no paper. Works on iOS and Android.
Easy 3 min
3 steps
Steps
Step-by-step walkthrough
- 1
Open the link in the email
When you receive the signing link email, tap it directly on your phone. It opens in the browser — no app required.
- 2
Verify your identity
zipzipdoc sends a one-time code (OTP) to your email or phone. Enter it to verify your identity.
- 3
Sign by finger or tap
On a touchscreen you can sign with your finger or simply tap the Sign button. Both methods are legally equivalent.
FAQ
Frequently asked questions
Yes. A mobile signature is legally identical — same cryptographic certificate, same audit trail.
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