Although there are varied systems
that use video-cameras, sound waves, or even magnetic fields, to sniff
data, the most widely used technique is interception of the Wi-Fi
signals emitted by users' smartphones. Triangulating on that signal can
estimate the phone's position to within a few meters. Some are also
involved in collecting a unique identifier, namely a MAC address, for
each phone, which allows building behavioural information of customers
(Source: TechnologyReview -1).
Businesses today are aware that
tracking mobile devices can lead to generation of valuable information
about customers, which can then be utilised to serve them better or
reach to a much effective group. And this may be precisely why 'Indoor
positioning' is slowly picking among businesses. U.S. retailers like
Family Dollar and American Apparel have also experimented with indoor
positioning. Indoor positioning is a practice of locating objects or
people wirelessly inside a building using a network of devices or
signals emitted by devices.
Nordstrom is also one such business
using indoor positioning. They acknowledged that in an attempt to serve
their customers better, they are tracking their movements through their
stores. They are using specific software to track how much time you
spend in specific departments within the store. The sensors within the
store collect information from customer smart phones as they attempt to
connect to Wi-Fi service (Source: CBS local - 2). Yet another example
includes Forest City Enterprises. They triangulate cellular signals to
monitor foot traffic in nearly 20 shopping centers they own and/or
manage. They claim that the data helped them decide on various crucial
aspects that affected user experience.
As far it is for
businesses, these interceptions sound highly useful. But how about the
users who aren't aware of their movements being watched over! With the
rapid proliferation of applications, the problem of privacy violations
based on sensors of mobile devices is expected to grow. Most mobile
phone platforms available lately are insufficient to protect their users
from such leakage of information. For better privacy across mobile
phone users, desirable uses of sensors and good privacy protection
solutions are important.
By
Oushee Ouseph