Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Physical Cryptographic Signatures for Absentee Ballots   Physical signature verification on absentee ballots became a major flashpoint
in the 2018 midterm elections in the United States, especially in states like
Georgia, Florida, and Arizona, where close election margins resulted in
heightened attention to the counting of absentee ballots. As vote-by-mail
solutions are becoming more prevalent across the U.S., these issues are sure to
continue affecting elections in the United States. Signature verification is an
inexact science; often times guidelines can vary widely from jurisdiction to
jurisdiction. In this paper we provide a cryptographic remedy to this solution
that is usable, secure, and easily integrated into existing election
infrastructure.

7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol