What is Device Fingerprinting?
Device fingerprinting identifies a visitor by the combination of attributes their browser and device expose, rather than by cookies or IP address alone.
How it works
Signals like canvas rendering, installed fonts, timezone, and hardware concurrency combine into a stable identifier that survives proxy rotation.
Why it matters for online assessment
Fingerprints let you recognize the same operator across thousands of IPs, which is where scrapers and botnets are weakest. For your assessments, that means the value of your scores stay protected and candidates get a fair experience.
How ExamFence detects it
ExamFence scores every request against behavioral, network, and device signals, so automated patterns surface even when they imitate real candidates. Suspicious sessions get challenged or blocked before they reach your assessments.