Frictionless Online Contract Signing with Biometrics
Enable clients to review and sign agreements on any device in seconds. OTP unlock, WebAuthn Face ID / Touch ID verification, and instant PDF audit certificates.
How does online contract signing work in SignSenders?
Online contract signing in SignSenders allows freelancers to send digital agreements to clients via email and verify their identity with an out-of-band 6-digit OTP code plus WebAuthn biometric authentication (Face ID, Touch ID, or Windows Hello). Clients unlock the document in their browser, complete biometric verification, and receive an instant tamper-evident PDF with an embedded SHA-256 audit trail.
- Zero client signup or app installation required
- Out-of-band 6-digit OTP verification
- WebAuthn Biometric Verification (Face ID, Touch ID, Windows Hello)
- Automatic SHA-256 cryptographic PDF sealing
Important Product Scope: SignSenders facilitates contract creation and electronic signing. It does not guarantee client compliance, act as a dispute arbitration service, provide formal legal advice.
A Smooth, Professional Experience for Your Clients
Remove signing friction and eliminate identity ambiguity.
Face ID & Touch ID
Clients authenticate with native device biometrics or scan a desktop QR code with their smartphone.
6-Digit OTP Unlock
Verifies signer identity via WhatsApp, SMS, or Slack without password fatigue.
Instant PDF Copy
Both parties immediately download identical copies with full cryptographic biometric audit metadata.
Frequently Asked Questions
Direct, transparent answers about SignSenders contract workflows, verification, and pricing.
Ready to create and sign your next contract?
Join independent freelancers using SignSenders. Get 1 free contract credit upon signing up, then pay as you go at ₹149 per contract.