What face search compares
Face-search systems compare facial appearance across images, including different photographs. That differs from finding copies of one photograph. A candidate result may resemble the uploaded face while referring to a different person. Lighting, pose, image quality and the provider’s index affect what appears.
Read scores in the provider’s terms
A similarity score describes a model’s comparison. Do not read “90” as a 90 percent probability of identity unless the provider has explicitly established that interpretation. A result may also have a strong visual resemblance while the source page supplies no useful identifying context.
FaceCheck’s FAQ explains its own score terminology. Scores from separate services should not be treated as equivalent without comparable evaluation evidence.
Keep the use bounded
Use your own photograph or one you have permission to submit. Review where the image goes and how removal works before starting. Do not use visual similarity to attach allegations, private contact information or eligibility decisions to a person.
If your question is simply whether your photograph has been copied, begin with a copy-oriented reverse image search. It may answer that question without a broader facial comparison.
Trace is currently a test environment
The fictional sample shows the interface using illustrative results. The API option sends a consented image to FaceCheck with testing enabled. The provider documents that test mode uses a limited index and does not produce meaningful search results. Trace does not offer paid, full-index searches.
Use the workspace to understand the flow, then read the accuracy guide before interpreting any provider’s results. Neither a convincing match nor an empty report replaces independent evidence.