Very Interesting:
As crowds pushed to receive the Priestly Blessing on Passover at the Western Wall, security personnel tried to identify priests, a task that will take on even more significance when the Third Temple is built.
As Josh Wander did explain that the mere “name check” for recognising Kohanim isn’t foolproof, as many men with last names that might identify them as kohanim, could in fact not really be so.
The guards were checking for lineage (pedigree) indicators that they are from a long line of actual Kohanim.