Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Put a Ring on It: Text Entry Performance on a Grip Ring Attached
  Smartphone   This paper presents results of a study investing effects of grip rings on
text entry. Results revealed that grip rings do not affect text entry
performance in terms of speed, accuracy, or keystrokes per character. It then
reflects on future research directions based on the results and observations
from the study. The purpose of this work is to stress the necessity of
classifying and evaluating low-cost mobile phone accessories.

5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph