Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MobilitApp: Analysing mobility data of citizens in the metropolitan area
  of Barcelona   MobilitApp is a platform designed to provide smart mobility services in urban
areas. It is designed to help citizens and transport authorities alike.
Citizens will be able to access the MobilitApp mobile application and decide
their optimal transportation strategy by visualising their usual routes, their
carbon footprint, receiving tips, analytics and general mobility information,
such as traffic and incident alerts. Transport authorities and service
providers will be able to access information about the mobility pattern of
citizens to o er their best services, improve costs and planning. The
MobilitApp client runs on Android devices and records synchronously, while
running in the background, periodic location updates from its users. The
information obtained is processed and analysed to understand the mobility
patterns of our users in the city of Barcelona, Spain.

37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga