Short overview on the evolution of NFC to accommodate broader IoT use cases including security, two-factor authentication and other applications of long range, low power wireless networking.

1. 1
NFC + DASH7

2. 2
NFC
13.56 MHz
Capacitive Match
NFC +
DASH7
13.56 MHz Cap
Match
433 MHz Cap
Extension
Modern RF interface chipsets are
primarily digital.
DASH7 uses GFSK modulation,
which is similar to NFC modulation.
- Digital blocks remain intact
In concept, adding DASH7 to NFC is accomplished by adding an
Integer-N PLL and a small number of analog switches.
- Integer-N PLL for 13.56 MHz input with:
Divider Ref = 128, Multiplier N = 4096 ± 7
- Analog switches to tune antenna at 13.56 or 433
- DASH7 uses much less output power than NFC
433 MHz DASH7 spectrum is low enough and narrow enough
that normal SiO2 fabrication is OK.
More information: ht.ly/BSxMN2
NFC + DASH7 Combo Chip Licensing Opportunity
DASH7 can be added to an NFC chipset & solution with minimal additions

3. DASH7 PHY Types 1,2,3
‣ 433.92 MHz band
‣ Modulation rates: 13.56 MHz / 2n
‣ Channel spacing: 13.56 MHz / 116
DASH7 Transport Layer
‣ Fast multicast data queries
‣ UDP/IP via NDEF
DASH7 Data Layer
‣ NDEF-enabled filesystem
‣ File security & encryption
NFC + DASH7 Integration Potential
NFC PHY
‣ 13.56 MHz band
‣ Modulation rates: 13.56 MHz / 2n
‣ Single Channel
NFC Transport Layer
‣ Fast multicast data queries
‣ Single application model
NFC Data Layer
‣ NDEF-enabled data blocks
‣ Block security & encryption
Key Point: DASH7 & NFC congruence in PHY and Data
Loop antennas are
suitable for both PHYs

4. DASH7 PHY Types 1,2,3
‣ 433.92 MHz band
‣ Modulation rates: 13.56 MHz / 2n
‣ Channel spacing: 13.56 MHz / 116
DASH7 Transport Layer
‣ Fast multicast data queries
‣ UDP/IP via NDEF
DASH7 Data Layer
‣ NDEF-enabled filesystem
‣ File security & encryption
NFC PHY
‣ 13.56 MHz band
‣ Modulation rates: 13.56 MHz / 2n
‣ Single Channel
NFC Transport Layer
‣ Fast multicast data queries
‣ Single application model
NFC Data Layer
‣ NDEF-enabled data blocks
‣ Block security & encryption
Loop antennas are
suitable for both PHYs

5. DASH7 & NFC Have Complementary Data Representation
Both support NDEF, DASH7 has compatible Presentation Layer as well
5 Session
Core Communication
4 Transport
3 Network
2 Data Link
7 Application Core-apps + NDEF + UDP
6 Presentation Core Database / Filesystem
Applications using NDEF can
interface with DASH7 APIs and Data
Elements without the need for 3rd-
party middleware.
NFC communication can also store
data in the DASH7 Core Database
just as it would into normal NFC data
blocks.
NFC
Middleware
5

6. 6
OSI Layer
7 Application
6
Presentatio
n
5 Session
4 Transport
3 Network
2 Data Link
1 Physical
DASH7 + NB-IoT Device
NDEF + UDP/IP + Custom
DASH7
low power
low latency
ad-hoc LAN networking
LPWAN networking
MSK Downlink, OFDM uplink
DASH7 + LoRa Device
NDEF + UDP/IP + Custom
DASH7
low power
low latency
ad-hoc LAN
LoRaWAN
low power
high latency
cellular WAN
+ Adaptive RS Encoding
LoRa CSS
DASH7 can operate on the LoRa
radio PHY and also in parallel with
the LoRaWAN stack. In this
integration, DASH7 adds important
bursty communication features to
LoRaWAN, much the way data
features were added to 3G cellular.
The emerging NB-IoT PHY and Data
Link specification is an ideal fit for the
DASH7 stack. DASH7 networking
already supports all the requirements
of the NB-IoT draft spec, and it is
capable of providing LPWAN and
LAN features to NB-IoT.
DASH7 + NFC Device
NDEF + UDP/IP + Custom
DASH7
low power
low latency
ad-hoc LAN
LPWAN
NFC
low power
low latency
proximity
RFID
Hybrid PHY
DASH7 is designed to work in a
hybrid environment with NFC.
Extending an NFC device to support
DASH7 was an early design goal.
NFC’s proximity communication is
complimented by DASH7’s long
range networking capabilities.
6

7. 7
Contact:
Patrick Burns
pat@haystacktechnologies.com
(650) 315-3026
More Resources:
• www.haystacktechnologies.com
• LoRaWAN vs. Haystack http://bit.ly/2hjJE5T
•The Indoor-Outdoor IoT http://bit.ly/2b65gRQ
•The IoT Hunger Games http://bit.ly/1IkYRtO
•Disrupting the IoT http://bit.ly/2cHRXFH
•Haystack’s open source firmware stack: http://bit.ly/1p5OjJg