abusing phones

Wix UA R&D 23 April 2015

to make the internet of things

@janjongboom

Telenor R&D

@janjongboomMozilla things

I hate JavaScript!

VBScript <3 <3 <3

PrerequisitesRaspberry Pi B+ (v1)

Breadboard Some LEDs

Jan's awesome Firefox OS Build

1 navigator.gpio.setPinMode(2, 'output') 2 .then(pin => { 3 pin.writeDigital(true); 4 5 setTimeout(() => pin.writeDigital(false), 500); 6 });

1 navigator.gpio.setPinMode(26, 'input') 2 .then(pin26 => { 3 4 setInterval(() => { 5 pin26.readDigital().then(v => { 6 // do something 7 }); 8 }, 50); 9 10 });

DownsideConnectivity? Camera? Accelerometer?

JanOSTurn your smartphone into an IoT board

JanOSAlternative OS for smartphones

Based on Firefox OS Runs on mobile phones

Runs without a screen

UAH 484

UAH 727

GSM ShieldOnly 2G

Antenna not included

UAH 1700

Firefox OS without UI, with extra low level APIs

So what is JanOS?

(and some kernel changes)

Extra APIsFilesystem access

Running native code IoT functionality like GPIO

Linux Kernel

Gecko HTML5 UI

Has all phone APIs in JS

Similar to node.jsBut...

Made for embeddedLaunched in 30 countries, on tens of handsets, tablets, TVs, etc.

First class comm with RILHardest part of the phone

Power efficientRPi battery shield 45 S$ Firefox OS phone

22 mAh idle 6 mAh idle

Still has the webWebRTC / WebAudio / DOM etc.

Getting startedFlashing JanOS on a phone

www.janos.io

First screwdriver ever!

Booting / flashing

Hello world

1. Clone repo

2. Create JS file with some code

3. Add the JS file to index.html

https://github.com/jan-os/janos

1 var conn = navigator.mozMobileConnections[0]; 2 conn.addEventListener('voicechange', function vc() { 3 if (conn.voice.connected) { 4 conn.removeEventListener('voicechange', vc); 5 6 var req = navigator.mozMobileMessage 7 .send('+31612345678', 'Hello from JanOS!'); 8 req.onsuccess = function() { 9 console.log('Message sent successfully'); 10 }; 11 req.onerror = function() { 12 console.error('Could not send SMS', req.error); 13 }; 14 } 15 });

DoorbellProximity sensor

Ring over bluetooth

Live video stream

Bluetooth doorbell 1 enableBluetoothAudio('00:0C:8A:75:EF:30').then(function() { 2 window.onuserproximity = function(e) { 3 if (e.near) { 4 var audio = new Audio('/sounds/doorbell.ogg'); 5 audio.play(); 6 } 7 }; 8 });

Brian

BrianTracker™2G connection

Connected to push server

Geolocation on request

Rethink applicationsConnectivity & sensors on hand

Accelerometer?

Proximity Accelerometer Ambient Light Magnetometer Gyroscope Humidity Ambient Temperature Pressure Battery Cameras

Bend sensor

Weight scale

Device LightReal purpose: adjust brightness

MusicTheremin is instrument

Use device light as tone frequency

Wave your hands and magic!

1 var context = new AudioContext(); 2 var oscillator = context.createOscillator(); 3 oscillator.connect(context.destination); 4 oscillator.start(0); 5 6 window.addEventListener('devicelight', function(e) { 7 oscillator.frequency.value = e.value * 10; 8 });

Music

AccelerometerReal purpose: Turn to mute

Juggling visualizerMeasure z-forces on device

Plot it in graph over time

Juggle with multiple devices

Juggling visualizer

1 window.addEventListener('devicemotion', function(e) { 2 var serie = getGraphSerieForDevice(e.data.deviceId); 3 serie.addPoint([ e.data.timestamp, Math.abs(e.data.z) ]); 4 });

BeaconsReal purpose: ads

BeaconsTag everyone with a beacon

Cross-reference facebook Phone alerts you who to talk to

Beacons 1 var Bleacon = require('bleacon'); 2 3 Bleacon.startScanning(); 4 5 Bleacon.on('discover', function(b) { 6 console.log('found', b.major, b.minor, b.distance); 7 });

Work in progress in Firefox OS & Firefox for Android (https://bugzilla.mozilla.org/show_bug.cgi?id=1063444)

Get hacking!

Grab a phone that has latest Chrome / Firefox

Use that sensor data

Think outside the box

Thank you!www.janos.io

@janjongboom