I provide laminated color photo ID sheets for all of the hets I produce, but I don't do that for visuals, or normals.
However, I do include their feeding records, which also have their lineage information on them.
Additionally, every animal I produce is listed in iHerp's lineage database, complete with photos, so if anyone uses iHerp, I can transfer the record to them, and they can print their own ID sheet (though it won't be signed).