Ditto. Have seen a few “missing” performers with very distinctive tattoos, but the best that can be done now is to filter by studio/gender. So if the performer had no other scenes with the studio, no luck 
FWIW, iafd.com claims to support it but it seems to be fairly broken and not specific (cannot search for “chinese character on left pectoral”, at best it returns actors with “chinese character SOMEWHERE and SOMETHING on left pectoral”.