  The exponential growth of wireless-based solutions, such as those related to
the mobile smart devices (e.g., smart-phones and tablets) and Internet of
Things (IoT) devices, has lead to countless advantages in every area of our
society. Such a scenario has transformed the world a few decades back,
dominated by latency, into a new world based on an efficient real-time
interaction paradigm.Recently, cryptocurrency have contributed to this
technological revolution, the fulcrum of which are a decentralization model and
a certification function offered by the so-called blockchain infrastructure,
which make it possible to certify the financial transactions, anonymously.
However, it should be observed how this challenging scenario has generated new
security problems directly related to the involved new technologies (e.g.,
e-commerce frauds, mobile bot-net attacks, blockchain DoS attacks,
cryptocurrency scams, etc.). In this context, we can acknowledge that the
scientific community efforts are usually oriented toward specific solutions,
instead to exploit all the available technologies, synergistically, in order to
define more efficient security paradigms. This paper aims to indicate a
possible approach able to improve the security of people and things by
introducing a novel paradigm to security defined Internet of Entities (IoE). It
is a mechanism for the localization of people and things, which exploits both
the huge number of existing wireless-based devices and the blockchain-based
distributed ledger technology, overcoming the limits of traditional
localization approaches, but without jeopardizing the user privacy. Its
operation is based on two core elements with interchangeable roles, entities
and trackers, which can be very common elements such as smart-phones, tablets,
and IoT devices, and its implementation requires minimal efforts thanks to the
existing infrastructures and devices.
