Could a few pieces of information identify you even if none names you outright? A probabilistic identifier is information that can identify a consumer or device with a degree of certainty “more probable than not.” A common interpretation is a greater than 50% chance of identifying one person. section 4.7.3
California’s CCPA includes probabilistic identifiers within its broad approach to personal information. That matters because combinations of data elements may point to an individual. The boundary remains disputed: the definition needs refinement before it can be applied consistently in practice. section 4.7.3
