Veriff Veriff is a global identity verification service company founded and headquartered in Tallinn, Estonia. is a global identity verification service company founded and headquartered in Tallinn Tallinn, the largest city and capital of Estonia (population 440 000). , Estonia. The company offers services for online businesses to mitigate fraud attempts and assist regulatory compliance. Offering protection from identity fraud and identity theft, Veriff Veriff is a global identity verification service company founded and headquartered in Tallinn, Estonia. verifies a customer's identity automatically, using an AI that analyzes a multitude of technological and behavioral indicators, including facial recognition.