AVS uses ThumbmarkJS and related browser-fingerprinting technology to help prevent fraud and abuse of AVS's free Product Analysis offering.
Browser fingerprinting differs from a traditional cookie.
Rather than relying solely on a stored cookie, fingerprinting may process multiple technical characteristics of a browser, device, network, or request and use those signals to generate or associate a pseudonymous identifier.
Signals may include categories such as:
- Browser characteristics
- Device characteristics
- Operating-system information
- Rendering or environment characteristics
- Network and request information
- IP-derived data
- Fingerprint identifiers
- Visitor identifiers
- Risk indicators
- Bot or VPN-related signals
- Related API metadata
AVS may use this technology to recognize potential repeated use of free Product Analyses even where ordinary cookies have been deleted, changed, or are otherwise unavailable.