Geo-IP Check Duplicate IP Bot Detection and Prevention Advance Geo Check(checks gap between zip and IP address) Email Verification through IPQualityscore VPN/Proxy Check Device ID(Digital Fingerprint) Double opt-in confirmation Social profile matching Virtual Machine Detection Secure Access Service Edge Detection Domain Reputation Detection of Ant-Fingerprinting Virtual Browsers
Geo-IP Check Duplicate IP Bot Detection and Prevention Advance Geo Check(checks gap between zip and IP address) Email Verification through IPQualityscore VPN/Proxy Check Device ID(Digital Fingerprint) Survey member de-duplication Speeder check Straight liners check(only in Full Service projects) Red herring/Trap Question Hash Check Open-ends analysis IP Tampering Check
Daily automated and manual checks Client feedback Reward fulfillment validation Open-ends analysis Fraudsters blocking and backlisting Training/Briefing of Field Interviewers Pilot Interviews Supervision and Monitoring/Location Control Random Spot Checks/Back Checks Of Respondents Data Validation and Verification Double-Entry Data Input Quality Assurance Audits Data Cleaning
