After rewatching DS9: “Defiant”, I had a thought; to prevent transporter clones from impersonating each other, could Starfleet require, as a part of duty, that transporter clones receive slight genomic resequencing that changes no major traits but allows DNA scanners to distinguish them?
I can think of a few issues. One, would it break genetic experimentation laws even though there would be negligible changes to each transporter clone? Two, is this too sever a violation of personal liberties for the Federation to be allowed? Three, is the technology there to do this effectively in a starship’s sickbay?
I’d say you’re right.
Just as a clarification, though, bother Enterprise Riker and Thomas Riker would receive the DNA modification to mark them as legal forks of the old Riker (since both are the real Riker, a.k.a there are four transporter clones, not two).
The same thing would be done to both Boimlers.