This document discusses NFC and BLE technologies and their uses for automating daily life and biohacking. It defines NFC and how it works, providing examples of common NFC tag types and their memory sizes. Risks of biohacking are noted. The document also demonstrates how to enable and use NFC in mobile apps to read plain text tags and manually create NFC records to write tags. Out-of-the-box uses include controlling lights, unlocking devices, and biohacking applications like embedding chips for access. More information and demos are provided in online resources.

1. Automating Your Life
A look at NFC and BLE

2. Mitch “Rez” Muenster

3. Mobile Developer

9. Grinder

10. What is a Grinder?
Grinders are do it your self cyborgs (people) that
are upgrading their bodies with hardware, without
waiting for corporate product development cycles
or authorities to say it is okay.

11. Implanting:
•
Implant itself is rather
small.
!
• Implanting is done at your
own risk
!
•
Location is everything.

12. Risks involved as a Ginder
If you dod decide to modify your self. be sure you know what you are doing. be safe.
Seeking out someone trained in body modification is strongly advised.
We are all adults and grown ups, if you do modify your body, you do so at your own risk.

14. Grinders and mobile Development
With an NFC or RFID implant you can use your body to unlock the phone without unlocking the
phone. Helps make your phone more secure.
Integrate it with apps developed for vehicles to provide hands free access to your car, or
motorcycle.
Enable the use of the tag scan as the “enter” or “okay” button rather then a touch.
And so much more.

15. NFC
What is it and how is it used

16. What Is NFC
NFC (Near Field Communication)
!
An evolved from of RFID
!
Provides contact-less data transfer and power usage.

17. Misconceptions

18. Misconceptions
RFID and NFC does not work how
Hollywood portrays it.
You cannot be tracked with the implant
like a GPS. (range is only a few inches)
RFID, NFC or implanting is not evil (if it is
then most shipping companies, and
stores you shop at are too for using this
tech)
There is no battery or power supply in an
RFID tag. Your body parts will not
explode dissolve from using a implant.
A few implants will not make you a
member of the Borg.

19. Types of NFC
NFC FORMATS
Popular NFC Tags & Memory Sizes
NfcA (ISO 14443-3A)
NfcB (ISO 14443-3B)
NfcF (JIS 6319-4)
NfcV (ISO 15693)
IsoDep (ISO 14443-4)
Ndef
MIFARE Classic
•
Ultralight – 48 bytes / 46 Useable
•
Ultralight C* – 128 bytes / 137 Useable
•
NTAG203 – 144 bytes / 137 Useable
•
Mifare 1k *– 1,024 bytes / 716 Useable
• Desfire 4k* – 4,112 bytes / 4,094 Useable
•
Topaz 512 – 512 bytes / 454 Useable
•
NTAG210 – 48 bytes / 46 Useable
•
NTAG210 – 144 bytes / 137 Useable
MIFARE Ultralight
* Contains Secure
Element

20. How it works
NFC Enabled device sends power to tag
Operating frequency of 13.56 MHz
Data transfer of 106 kbit/s
Operating distance up to 100 mm (depending on various parameters as e.g. field strength and
antenna geometry)

21. What Happens when a tag is detected?
Tag is analyzed
Categorize the data.
Parse it to figure out the mime type or URI payload
Start application that is interested in the categorized data.

22. Tag read life cycle

23. Demo time!

24. Enable NFC in your app
1.
Request permission to use NFC hardware
<uses-permission android:name=“android.permission.NFC” />
2.
Set SDK Level
<uses-sdk android:minSDKVersion=“10”/>
3.
Set uses feature so app only shows on Google Play if the Device has NFC Hardware
Not required but curious for the user who is downloading the app.
<uses-feature android:name=“android.hardware.nfc” android:required=“true”/>

25. Reading a plan text tag
1.
Grab the intent
2.
Check if action is ACTION_NDEF_DISCOVERED
3.
Get EXTRA_NDEF_MESSAGES from the extras bundle
4.
Extract the payloads from the NdefRecords

26. Writing a Tag
public NdefRecord createTextRecord(String payload, Locale locale, boolean encodeInUtf8)
{
byte[] langBytes = locale.getLanguage().getBytes(Charset.forName("US-ASCII"));
Charset utfEncoding = encodeInUtf8 ? Charset.forName("UTF-8") : Charset.forName("UTF-16");
byte[] textBytes = payload.getBytes(utfEncoding);
int utfBit = encodeInUtf8 ? 0 : (1 << 7);
char status = (char) (utfBit + langBytes.length);
byte[] data = new byte[1 + langBytes.length + textBytes.length];
data[0] = (byte) status;
System.arraycopy(langBytes, 0, data, 1, langBytes.length);
System.arraycopy(textBytes, 0, data, 1 + langBytes.length, textBytes.length);
NdefRecord record = new NdefRecord(NdefRecord.TNF_WELL_KNOWN,
NdefRecord.RTD_TEXT, new byte[0], data);
return record;
}

27. Manually creating the NdefRecord
byte[] uriField = "example.com".getBytes(Charset.forName("US-ASCII"));
byte[] payload = new byte[uriField.length + 1]; //add 1 for the URI Prefix
byte payload[0] = 0x01; //prefixes http://www. to the URI
System.arraycopy(uriField, 0, payload, 1, uriField.length); //appends URI to payload
NdefRecord rtdUriRecord = new NdefRecord(
NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_URI, new byte[0], payload);

28. Uses for NFC
SMART Advertisements
Mobile payments
File Sharing
Goods and device
authentication
Bluetooth or Wi-Fi
pairing
Connection handover
Authentication tags
Call requests
Business cards
SMS
Call to Action

29. Out of the box NFC uses
Light switch
Use an NFC tag as a on of proxy for someone
with a Philips Hue light bulb
(POE) Power Over Ethernet
Use an NFC tag as a proxy for sending a POE
packet to your computer
NFC enabled rings to provide the same
functionality as listed above
Bio Hacking, chipping or grinders
Imbedding an NFC chip in the body to open
doors, turn on lights and all of the previously
mentioned uses.
http://www.youtube.com/watch?
v=o4caxH5_Pe4
Using phones as race cars
http://www.youtube.com/watch?
v=c6ATOgEcR1U

30. More info and demos
http://developer.android.com/guide/topics/connectivity/nfc/nfc.htmlD
http://developer.android.com/guide/topics/connectivity/nfc/advanced-nfc.html
http://www.dangerousthings.com

31. Thank You
@MobileRez - Twitter
Any questions, see me after talk.