What the evidence says
A signature here is a record, not a picture of a pen stroke. It holds the fingerprint of the exact document that was signed, the time it happened, the date the signer chose, the address it was sent to, and the outcome of the identity check — which kind of ID, and how well the live face matched it.
We do not keep the images. The ID photo and the camera frames are deleted after 30 days unless a person had to review them; the decision and the scores stay with the signature.