182 Software Networks
To begin with, the room is reserved using the mobile terminal. The
smartphone must contain a secure element, i.e. a placement which
cannot easily be reached from outside. This secure element may be a
variety of different types, depending on the terminal (smartphone,
tablet, laptop, etc.). It could be a SIM card from the operator, but in
this case we also need the operator’s authorization to use it. It may
also be a so-called “embedded SIM”, which is the equivalent of a chip
card, but inserted by the manufacturer that made the smartphone. Most
of the time, it is an NXP component which possesses much more than
50% of the market. It may also be a memory card (SD card) which is
embedded in the mobile phone. Finally, as indicated in Figure 6.23, it
may be an intermediary chip card (a loyalty card from the hotel where
the client wishes to stay) that communicates with the mobile through
the NFC interface. The mobile, in this case, is seen as a modem which
facilitates communication between the external chip card and the key
server. The key server is hosted in the Cloud. The door itself is NFC,
and can be opened by a digital mobile key situated on the smartphone
or on the external NFC card.
When the client arrives in the vicinity of the hotel, it is detected by
the smartphone’s GPS. The phone then transfers the key to the room
into the secure zone of its security apparatus or directly to the external
NFC chip card. We then merely need to bring the smartphone or the
external card near to the NFC interface of the card to open the door.
6.24. NFC contactless payment
At the start of 2014, the number of contactless bank cards was 20%
of the total number of bank cards. Similarly, 20% of smartphones had
an NFC chip. Before the dawn of NFC, other payment systems had
been tried, such as SMS payment, a direct-payment model and a
solution using WAP. Over the past few years, payment using NFC
cards has expanded hugely, and numerous variants have been defined.
In the context of NFC, the mobile must be brought to within a few
centimeters of the payment terminal. Two major axes for this have
been established: prepayment and direct payment. In the first case, the
terminal is seen as an electronic wallet: with each transaction, money
www.it-ebooks.info
To begin with, the room is reserved using the mobile terminal. The
smartphone must contain a secure element, i.e. a placement which
cannot easily be reached from outside. This secure element may be a
variety of different types, depending on the terminal (smartphone,
tablet, laptop, etc.). It could be a SIM card from the operator, but in
this case we also need the operator’s authorization to use it. It may
also be a so-called “embedded SIM”, which is the equivalent of a chip
card, but inserted by the manufacturer that made the smartphone. Most
of the time, it is an NXP component which possesses much more than
50% of the market. It may also be a memory card (SD card) which is
embedded in the mobile phone. Finally, as indicated in Figure 6.23, it
may be an intermediary chip card (a loyalty card from the hotel where
the client wishes to stay) that communicates with the mobile through
the NFC interface. The mobile, in this case, is seen as a modem which
facilitates communication between the external chip card and the key
server. The key server is hosted in the Cloud. The door itself is NFC,
and can be opened by a digital mobile key situated on the smartphone
or on the external NFC card.
When the client arrives in the vicinity of the hotel, it is detected by
the smartphone’s GPS. The phone then transfers the key to the room
into the secure zone of its security apparatus or directly to the external
NFC chip card. We then merely need to bring the smartphone or the
external card near to the NFC interface of the card to open the door.
6.24. NFC contactless payment
At the start of 2014, the number of contactless bank cards was 20%
of the total number of bank cards. Similarly, 20% of smartphones had
an NFC chip. Before the dawn of NFC, other payment systems had
been tried, such as SMS payment, a direct-payment model and a
solution using WAP. Over the past few years, payment using NFC
cards has expanded hugely, and numerous variants have been defined.
In the context of NFC, the mobile must be brought to within a few
centimeters of the payment terminal. Two major axes for this have
been established: prepayment and direct payment. In the first case, the
terminal is seen as an electronic wallet: with each transaction, money
www.it-ebooks.info