Biomedical Engineering Reference
In-Depth Information
Figure 9-5.
the Phonak ComPilot works as a stream-
ing device as it transmits its signal to hearing aids over
the ISM band. Image courtesy of Phonak.
Near Field Communications
NFC operates using a
point-to-point sys-
tem
. Point-to-point connections, between
two devices with NFC tags, allow com-
munications between the sender and
receiver to be established without the
need for pairing. Thus, establishing a line
of communication for NFC devices is
almost instantaneous. In addition, NFC
devices require less power than Bluetooth
devices for these connections. Essentially,
all that is required for two NFC devices
to communicate is for one device to enter
the proximity of the other. Additionally,
Transmitting via the 13.56 MHz band,
near field communication (NFC) is
another method of wireless communica-
tion. Similar to Bluetooth, NFC is a short-
range communication technology but is
newer and less well-known. Like Blue-
tooth, NFC technology has been incor-
porated into smart devices, except there
are a few differences between the two
technologies. While Bluetooth requires a
few seconds and power for secure pairing,
