Pennsylvania

they are "cross-checking" the signature to a driver's license (or other state ID) signature.

I remember a bunch of years ago when I went to vote, the pre-printed "check" signature on the page designated for me to sign, had finally been updated to how I evolved to sign things and I realized that it was pulled from the signature used on my recently-renewed driver's license.

However if you recall the drama in 2020 here when they were counting ballots and finally got around to doing the "provisional" and/or set-aside mail-in ballots late in the week, non-city resident RW zombie squads were demanding to "participate" in "watching" the counting process and to "verify" the signatures.

In fact, there was an infamous pic of the unhinged MAGA loons at one of the Convention Center doors trying to break it down to get in.