Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tracking on the Web, Mobile and the Internet-of-Things   `Tracking' is the collection of data about an individual's activity across
multiple distinct contexts and the retention, use, or sharing of data derived
from that activity outside the context in which it occurred. This paper aims to
introduce tracking on the web, smartphones, and the Internet of Things, to an
audience with little or no previous knowledge. It covers these topics primarily
from the perspective of computer science and human-computer interaction, but
also includes relevant law and policy aspects. Rather than a systematic
literature review, it aims to provide an over-arching narrative spanning this
large research space.
  Section 1 introduces the concept of tracking. Section 2 provides a short
history of the major developments of tracking on the web. Section 3 presents
research covering the detection, measurement and analysis of web tracking
technologies. Section 4 delves into the countermeasures against web tracking
and mechanisms that have been proposed to allow users to control and limit
tracking, as well as studies into end-user perspectives on tracking. Section 5
focuses on tracking on `smart' devices including smartphones and the internet
of things. Section 6 covers emerging issues affecting the future of tracking
across these different platforms.

2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio