Your Data Is Only As Good
As Your Respondents.
Survey fraud silently corrupts your research. Duplicate respondents, click farms, and incentive hunters destroy data quality — and your decisions suffer.
The hidden epidemic in market research
CAPTCHAs stop bots. Nothing stops humans submitting twice — until now.
How it works
No sign-up, no government ID, no biometrics. Just a 10-second gesture.
Your survey link includes an APTOGON widget — no redirects, no friction.
Respondent draws a gesture. Device fingerprint + behavioral timing confirms it's a human.
A unique, anonymous Decentralized ID is assigned. No name, no email, no biometrics stored.
Your backend rejects any second submission from the same DID. On-chain proof is created automatically.
Calculate your savings
See what survey fraud costs you — and what APTOGON costs in return.
ROI Calculator
APTOGON vs. alternatives
Integrate in minutes
Drop one API call into your survey backend. That's it.
"survey_id": "survey_abc123",
"unique_scope": "survey"
"unique": true, // false if DID already submitted
"did": "did:apt:0xbddd...",
"onchain_tx": "0x9ad9..."
Ready to clean your data?
Start free with 1,000 verifications/month. No credit card, no contract.