Devoxx 2015 presentation This presentation will quickly go over the 3 main smartwatch platforms on the market, namely Pebble, Android Wear and Apple Watch. We will explain the characteristics of each platform, the usage scenarios it supports, the architecture of an app, show the language and the tools that are available to develop apps, describe the development lifecycle and illustrate with code samples (no live-coding). We will demonstrate all that based on a common app developed for the three platforms.

1. @sarbogast @eloudsa#Devoxx #smartvoxx
Smartwatch Landscape
Sébastien Arbogast
Said Eloudrhiri

2. #Devoxx #smartvoxx @sarbogast @eloudsa
• Who owns a smartwatch?
• Who is an Android developer?
• Who is an iOS developer?
• Who is a Pebble developer?
• Who is a Rolex developer?
• Who has already written a smartwatch app?
• Who is a member of the Night’s Watch?
Survey

3. #Devoxx #smartvoxx @sarbogast @eloudsa
Sébastien Arbogast
@sarbogast
• Java developer for 10 years
• iOS developers for 5 years (developer of the first Devoxx schedule
app)
• Pebble developer for 2 years
• Owner of TikTok Lunatik with iPod Nano
• VP of engineering for Take Eat Easy

4. #Devoxx #smartvoxx @sarbogast @eloudsa
Said Eloudrhiri
@eloudsa
• Developer since 1992
• Agile Coach and trainer
• Devoxx4Kids helper (Sphero, MindStorms, CodeCombat)
• Side Projects: mobile development
• Husband and father of Nora, Rayane and Djenna

5. #Devoxx #smartvoxx @sarbogast @eloudsa
Disclaimer
We are not related to Google,Apple or Pebble.
We are just curious developers sharing our experience.
Materials used in this presentation remains the property of their
owners.
Any questions?

6. #Devoxx #smartvoxx @sarbogast @eloudsa
Why develop for smartwatches?

7. #Devoxx #smartvoxx @sarbogast @eloudsa
Glanceable

8. #Devoxx #smartvoxx @sarbogast @eloudsa
Sensors

9. #Devoxx #smartvoxx @sarbogast @eloudsa
Internet of Things

10. #Devoxx #smartvoxx @sarbogast @eloudsa
Notification-driven

11. #Devoxx #smartvoxx @sarbogast @eloudsa
Small screen

12. #Devoxx #smartvoxx @sarbogast @eloudsa
Interactions

13. #Devoxx #smartvoxx @sarbogast @eloudsa
Personal use

14. #Devoxx #smartvoxx @sarbogast @eloudsa
Landscape
Apple
Watch
Android
Wear
Pebble Tizen

15. #Devoxx #smartvoxx @sarbogast @eloudsa
IDE

16. #Devoxx #smartvoxx @sarbogast @eloudsa
XCode

17. #Devoxx #smartvoxx @sarbogast @eloudsa
Android Studio

18. #Devoxx #smartvoxx @sarbogast @eloudsa
Debugging with Emulator
USB
Bridge
adb -d forward tcp:5601 tcp:5601

19. #Devoxx #smartvoxx @sarbogast @eloudsa
Android Studio or Eclipse?
• Android Development Tools (ADT)
• Andmore - Eclipse Android Tooling (Incubation Project)
https://projects.eclipse.org/projects/tools.andmore
http://developer.android.com/tools/sdk/eclipse-adt.html

20. #Devoxx #smartvoxx @sarbogast @eloudsa
CloudPebble

21. #Devoxx #smartvoxx @sarbogast @eloudsa
Development cycle

22. #Devoxx #smartvoxx @sarbogast @eloudsa
Apple Watch
• Select the Watch App scheme
• Select your emulator configuration
• Run
• You can debug both emulators at the same time

23. #Devoxx #smartvoxx @sarbogast @eloudsa
Android
• Install Android Wear on your Phone
• Create Wear emulator
• Run Wear emulator
• Open ports to let emulator communicate with physical phone
• Pair the Phone and the Wear Emulator
• Deploy application on Wear and/or Mobile

24. #Devoxx #smartvoxx @sarbogast @eloudsa
Pebble
• Connect Pebble app with CloudPebble
• Enable Developer Connections
• Run in CloudPebble

25. #Devoxx #smartvoxx @sarbogast @eloudsa
Available Watches

26. #Devoxx #smartvoxx @sarbogast @eloudsa
Apple Watch
272x340312x390

27. #Devoxx #smartvoxx @sarbogast @eloudsa
Android Wear

28. #Devoxx #smartvoxx @sarbogast @eloudsa
Square Round Round Chin
Form factors

29. #Devoxx #smartvoxx @sarbogast @eloudsa
Pebble
Classic Steel Time Time Steel Time Round
144x168

30. #Devoxx #smartvoxx @sarbogast @eloudsa
Compatibility
• Android Wear:Android phones + iPhone (with some
limitations)
• Apple Watch: iPhones only
• Pebble:Android phones + iPhones (with SDKs to integrate
with apps on both platforms)

31. #Devoxx #smartvoxx @sarbogast @eloudsa
Inputs and Outputs

32. #Devoxx #smartvoxx @sarbogast @eloudsa
Apple Watch
• Gestures
• Force Touch
• Digital Crown
• Side Button
• Taptic Engine
• Microphone and speaker
• Accelerometer
• Heart rate monitor
• (NFC)

33. #Devoxx #smartvoxx @sarbogast @eloudsa
• Touch screen
• Shake moves
• Button
• Ambiant mode
• Microphone (Voice control)
• Heart rate monitor (PPG)
• Gyro,Accelerometer, Compass
• Barometer
• NFC
• GPS
Android Wear

34. #Devoxx #smartvoxx @sarbogast @eloudsa
Pebble
• Non-touch (color) e-ink screen
• 4 buttons
• Vibration
• Microphone

35. #Devoxx #smartvoxx @sarbogast @eloudsa
Design Principles

36. #Devoxx #smartvoxx @sarbogast @eloudsa
Human Interface Guidelines
• Lightweight interactions
• Holistic design
• Personal communication

37. #Devoxx #smartvoxx @sarbogast @eloudsa
Creative vision for Android Wear
• Suggest: Context Stream
• Demand: Cue Cards
• Glanceable
• Zero or Low interaction
Beam me up!

38. #Devoxx #smartvoxx @sarbogast @eloudsa
Guidelines and patterns
• Cards
• List options with Menus
• Execute actions with action bars
• Prompting User Action on the Phone
• Show Time and Data with the Status Bar
• Show Alerts and Get Decisions with Modal
Windows
• UsingVibrations and Haptic Feedback
• Handling Connection Problems

39. #Devoxx #smartvoxx @sarbogast @eloudsa
Different kinds of apps

40. #Devoxx #smartvoxx @sarbogast @eloudsa
Apple Watch
• Apps
• Notifications
• Glances
• Complications

41. #Devoxx #smartvoxx @sarbogast @eloudsa
Android Wear
• Full-screen apps
• Notifications
• Custom notifications
• Watch face
4
“If you don't have a Rolex by the time you
reach 50,
then you have clearly failed in your life.”
Jacques Séguéla

42. #Devoxx #smartvoxx @sarbogast @eloudsa
Pebble
• Apps
• Timeline integration

43. #Devoxx #smartvoxx @sarbogast @eloudsa
Languages
• Apple Watch: Swift or Objective-C
• Android Wear: Java (or Kotlin or Groovy or …)
• Pebble: C or Javascript (Pebble.js)

44. #Devoxx #smartvoxx @sarbogast @eloudsa
self.table.setNumberOfRows(self.schedules!.count, withRowType: "schedule")
for (index,schedule) in self.schedules!.enumerate() {
if let row = self.table.rowControllerAtIndex(index)
as? ScheduleRowController {
row.label.setText(
schedule.title!.stringByReplacingOccurrencesOfString(
NSLocalizedString("Schedule for ", comment:""),
withString: ""
)
)
}
}
Apple Watch

45. Demo
#Devoxx #smartvoxx @sarbogast @eloudsa

46. #Devoxx #smartvoxx @sarbogast @eloudsa
Layout: Round / Square

47. #Devoxx #smartvoxx @sarbogast @eloudsa
<?xml version="1.0" encoding="utf-8"?>
<android.support.wearable.view.WatchViewStub
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/watch_talk_stub"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:rectLayout="@layout/talk_rect_fragment"
app:roundLayout="@layout/talk_round_fragment"
tools:context=".TalkActivity"
tools:deviceIds="wear">
</android.support.wearable.view.WatchViewStub>
Layout: Main
res/layout/talk_fragment.xml

48. #Devoxx #smartvoxx @sarbogast @eloudsa
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="15dp">
<TextView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
Sub-layout: Square
res/layout/talk_rect_fragment.xml

49. #Devoxx #smartvoxx @sarbogast @eloudsa
<?xml version="1.0" encoding="utf-8"?>
<android.support.wearable.view.BoxInsetLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="15dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
Sub-layout: Round
res/layout/talk_round_fragment.xml

50. #Devoxx #smartvoxx @sarbogast @eloudsa
CloudPebble UI editor

51. #Devoxx #smartvoxx @sarbogast @eloudsa
static void main_window_load(Window *window) {
// Get information about the Window
Layer *window_layer = window_get_root_layer(window);
GRect bounds = layer_get_bounds(window_layer);
// Create the TextLayer with specific bounds
s_time_layer = text_layer_create(
GRect(0, PBL_IF_ROUND_ELSE(58, 52), bounds.size.w, 50));
// Improve the layout to be more like a watchface
text_layer_set_background_color(s_time_layer, GColorClear);
text_layer_set_text_color(s_time_layer, GColorBlack);
text_layer_set_text(s_time_layer, "00:00");
text_layer_set_font(s_time_layer, fonts_get_system_font(FONT_KEY_BITHAM_42_BOLD));
text_layer_set_text_alignment(s_time_layer, GTextAlignmentCenter);
// Add it as a child layer to the Window's root layer
layer_add_child(window_layer, text_layer_get_layer(s_time_layer));
}
Pebble

52. #Devoxx #smartvoxx @sarbogast @eloudsa
Internet connectivity

53. #Devoxx #smartvoxx @sarbogast @eloudsa
Apple Watch (NSURLSession)
Apple
Watch
Apple
Watch app
Internet

54. #Devoxx #smartvoxx @sarbogast @eloudsa
func loadSchedulesForConference(conference:String, callback: ([Schedule]) -> (Void)) {
//Configure session and disable caching as it fails
let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
configuration.requestCachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData
let session = NSURLSession(configuration: configuration)
//Call API
let schedulesURL = NSURL(string: "http://cfp.devoxx.be/api/conferences/(conference)/schedules/")!
let task = session.dataTaskWithURL(schedulesURL) { (data: NSData?, response:NSURLResponse?,
error:NSError?) -> Void in
//process data
}
task.resume()
}
Apple Watch

55. #Devoxx #smartvoxx @sarbogast @eloudsa
Internet connectivity
Fallback solution when Bluetooth not
available.
Unable to connect on remote servers.

56. #Devoxx #smartvoxx @sarbogast @eloudsa
/**
* Created by eloudsa on 30/10/15.
*/
public interface DevoxxApi {
@GET("/conferences/{conference}/schedules")
void getSchedules(@Path("conference") String conference, Callback<Schedules> callback);
@GET("/conferences/{conference}/schedules/{day}")
void getSchedule(@Path("conference") String conference, @Path("day") String day, Callback<SlotList> callback);
@GET("/conferences/{conference}/talks/{talkid}")
void getTalk(@Path("conference") String conference, @Path("talkid") String uuid, Callback<Talk> callback);
@GET("/conferences/{conference}/speakers/{uuid}")
void getSpeaker(@Path("conference") String conference, @Path("uuid") String uuid, Callback<Speaker> callback);
}
Android Wear: Endpoints
Retrofit REST API client from Square

57. #Devoxx #smartvoxx @sarbogast @eloudsa
@Override
public void onCreate() {
super.onCreate();
…
// prepare the REST build
mRestAdapter = new RestAdapter.Builder()
.setEndpoint(getResources().getString(R.string.devoxx_rest_api))
.build();
mMethods = mRestAdapter.create(DevoxxApi.class);
mConferenceName = getResources().getString(R.string.devoxx_conference);
}
Android Wear: Setup

58. #Devoxx #smartvoxx @sarbogast @eloudsa
// Retrieve schedules from Devoxx
private void retrieveSchedules() {
// retrieve the schedules list from the server
Callback callback = new Callback() {
@Override
public void success(Object o, Response response) {
// retrieve schedule from REST
Schedules scheduleList = (Schedules) o;
if (scheduleList == null) {
Log.d(TAG, "No schedules!");
return;
}
sendSchedules(scheduleList.getLinks());
}
@Override
public void failure(RetrofitError retrofitError) {
Log.d(TAG, retrofitError.getMessage());
}
};
mMethods.getSchedules(mConferenceName, callback);
}
Android Wear: Get Shedules
1
2
3

59. #Devoxx #smartvoxx @sarbogast @eloudsa
Pebble
Pebble app
Pebble App
JS module
Internet
AppMessage
XHR

60. #Devoxx #smartvoxx @sarbogast @eloudsa
static bool load_site_list() {
if(accessToken && sizeof(accessToken) > 0) {
DictionaryIterator *iter;
app_message_outbox_begin(&iter);
if (iter == NULL) {
APP_LOG(APP_LOG_LEVEL_DEBUG, "null iter");
return false;
}
Tuplet message_type_tuple = TupletInteger(MESSAGE_TYPE, LOAD_SITE_LIST);
dict_write_tuplet(iter, &message_type_tuple);
Tuplet access_token_tuple = TupletCString(ACCESS_TOKEN, accessToken);
dict_write_tuplet(iter, &access_token_tuple);
Tuplet refresh_token_tuple = TupletCString(REFRESH_TOKEN, refreshToken);
dict_write_tuplet(iter, &refresh_token_tuple);
dict_write_end(iter);
app_message_outbox_send();
return true;
} else {
return false;
}
}
Pebble to phone

61. #Devoxx #smartvoxx @sarbogast @eloudsa
function loadSiteList(accessToken, refreshToken) {
console.log("Loading site list for access token " + accessToken);
var response;
var req = new XMLHttpRequest();
// build the GET request
req.open('GET', "https://api.myfox.me:443/v2/client/site/items?access_token=" + accessToken, true);
req.onload = function(e) {
if (req.readyState == 4) {
// 200 - HTTP OK
if(req.status == 200) {
console.log(req.responseText);
response = JSON.parse(req.responseText);
var siteList;
if (response.status === 'OK') {
siteList = response.payload.items;
var msg = {};
msg.messageType = MessageType.SITE_LIST;
for(var i = 0; i < siteList.length; i++){
var site = siteList[i];
msg['' + site.siteId] = site.label;
}
console.log("Sending response back to Pebble: " + JSON.stringify(msg));
Pebble.sendAppMessage(msg);
} else {
console.log("Status not OK");
Pebble.sendAppMessage({messageType:MessageType.ERROR, errorMessage:"Could not load list of sites. Please try again later."});
}
} else if(req.status == 401 && refreshToken){
getNewAccessToken(refreshToken, loadSiteList);
} else {
console.log("Request returned error code " + req.status.toString());
Pebble.sendAppMessage({messageType:MessageType.ERROR});
}
}
};
req.send(null);
}
Phone to internet and back

62. #Devoxx #smartvoxx @sarbogast @eloudsa
Phone communication

63. #Devoxx #smartvoxx @sarbogast @eloudsa
Watch Connectivity
Apple
Watch
update application context
send message
transfer user info
transfer file
replace
live
queue
big data

64. #Devoxx #smartvoxx @sarbogast @eloudsa
if WCSession.isSupported() {
session = WCSession.defaultSession()
session?.delegate = self
session?.activateSession()
if let session = self.session where session.reachable {
session.sendMessage(["talkSlot" : talkSlotMessage as NSDictionary],
replyHandler: { (reply:[String : AnyObject]) -> Void in
},
errorHandler: { (error:NSError) -> Void in
print(error)
}
)
} else {
session?.transferUserInfo(["talkSlot" : talkSlotMessage as NSDictionary])
}
}
Watch Connectivity

65. #Devoxx #smartvoxx @sarbogast @eloudsa
Google API Client
Device
Google Play
Services
Your App
Google API Client
Google Play
services library
Message API
Data API
Node API

66. #Devoxx #smartvoxx @sarbogast @eloudsa
public class ScheduleActivity extends Activity {
// Google Play Services
private GoogleApiClient mApiClient;
…
@Override
protected void onStart() {
super.onStart();
mApiClient = new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.build();
mApiClient.connect();
}
@Override
protected void onStop() {
if ((mApiClient != null) && (mApiClient.isConnected())) {
Wearable.DataApi.removeListener(mApiClient, this);
mApiClient.disconnect();
}
super.onStop();
}
Google API Client
1
2
3

67. #Devoxx #smartvoxx @sarbogast @eloudsa
Connected nodes
Phone Watch
Node Node
Message API
WearableListenerService
onMessageReceived()
MessageApi
sendMessage()

68. #Devoxx #smartvoxx @sarbogast @eloudsa
public class ScheduleActivity extends Activity {
…
private void sendMessage(final String path, final String message) {
new Thread(new Runnable() {
@Override
public void run() {
// broadcast the message to all connected devices
final NodeApi.GetConnectedNodesResult nodes = Wearable.NodeApi.getConnectedNodes(mApiClient).await();
for (Node node : nodes.getNodes()) {
Wearable.MessageApi.sendMessage(mApiClient, node.getId(), path, message.getBytes()).await();
}
}
}).start();
}
Message API: Send Message

69. #Devoxx #smartvoxx @sarbogast @eloudsa
public class WearService extends WearableListenerService {
…
@Override
public void onMessageReceived(MessageEvent messageEvent) {
// Processing the incoming message
String path = messageEvent.getPath();
String data = new String(messageEvent.getData());
if (path.equalsIgnoreCase(Constants.SCHEDULES_PATH)) {
retrieveSchedules();
return;
}
…
Message API: Message Received

70. #Devoxx #smartvoxx @sarbogast @eloudsa
Data Synchronisation
Phone Watch
Node Node
Data API.putDataItem()
Wearable.DataApi
onDataChanged()
DataApi.DataListener

71. #Devoxx #smartvoxx @sarbogast @eloudsa
// send Schedules to the watch
private void sendSchedules(List<Link> schedules) {
final PutDataMapRequest putDataMapRequest = PutDataMapRequest.create(Constants.SCHEDULES_PATH);
ArrayList<DataMap> schedulesDataMap = new ArrayList<>();
// process each schedule
for (Link schedule : schedules) {
DataMap scheduleDataMap = new DataMap();
// process and push schedule's data
scheduleDataMap.putString("day", Utils.getLastPartUrl(schedule.getHref()));
scheduleDataMap.putString("title", schedule.getTitle());
schedulesDataMap.add(scheduleDataMap);
}
// store the list in the datamap to send it to the watch
putDataMapRequest.getDataMap().putDataMapArrayList(Constants.LIST_PATH, schedulesDataMap);
// send the schedules
if (mApiClient.isConnected()) {
Wearable.DataApi.putDataItem(mApiClient, putDataMapRequest.asPutDataRequest());
}
}
Data API: Send Data
1
2
3
4

72. #Devoxx #smartvoxx @sarbogast @eloudsa
@Override
public void onDataChanged(DataEventBuffer dataEventBuffer) {
for (DataEvent event : dataEventBuffer) {
// Check if list of schedules has changed
if (event.getType() == DataEvent.TYPE_CHANGED && event.getDataItem().getUri().getPath().startsWith(Constants.SCHEDULES_PATH)) {
// get the list of schedules from the incoming data event
SchedulesListWrapper schedulesListWrapper = new SchedulesListWrapper();
final List<Schedule> schedulesList = schedulesListWrapper.getSchedulesList(event);
runOnUiThread(new Runnable() {
@Override
public void run() {
// hide the progress bar
findViewById(R.id.progressBar).setVisibility(View.GONE);
mListViewAdapter.refresh(schedulesList);
}
});
return;
}
}
}
1
2
3
4
Data API: Data changed

73. #Devoxx #smartvoxx @sarbogast @eloudsa
Caching

74. #Devoxx #smartvoxx @sarbogast @eloudsa
private func saveSchedulesFromData(data: NSData, inContext context: NSManagedObjectContext) {
context.performBlockAndWait { () -> Void in
if data.length > 0 {
do {
let schedulesDict = try NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)
if let schedulesDict = schedulesDict as? NSDictionary, schedulesArray = schedulesDict["links"] as? NSArray {
guard let devoxx15 = self.getOrCreateDevoxx15(inContext: context) else { return }
var schedules = [Schedule]()
for scheduleDict in schedulesArray {
let scheduleDict = scheduleDict as? NSDictionary
let schedule = self.getOrCreateScheduleForHref(scheduleDict["href"] as! String, inContext: context)!
schedule.title = scheduleDict["title"] as? String
schedule.href = scheduleDict["href"] as? String
schedule.conference = devoxx15
self.saveContext(context)
schedules.append(schedule)
}
devoxx15.schedules = NSOrderedSet(array: schedules)
self.saveContext(context)
}
} catch let jsonError as NSError {
print(jsonError)
}
}
}
}
Core Data on Apple Watch

75. Demo
#Devoxx #smartvoxx @sarbogast @eloudsa

76. #Devoxx #smartvoxx @sarbogast @eloudsa
Wear
Data Item
(Cache)
.getInt()
DataMap
.getDataIetms()
DataApi
wear://path_to_data
1
2
Data caching
MessageApi
sendMessage()
3
4

77. Demo
#Devoxx #smartvoxx @sarbogast @eloudsa

78. #Devoxx #smartvoxx @sarbogast @eloudsa
App structure and distribution

79. #Devoxx #smartvoxx @sarbogast @eloudsa
Apple Watch
• Package the Apple Watch app with the iPhone app
• Release the iPhone app like any other
• Wait for review…
• Wait again…
• Wait some more…

80. #Devoxx #smartvoxx @sarbogast @eloudsa
Android Wear

81. #Devoxx #smartvoxx @sarbogast @eloudsa
Prepare the build
• Include permissions required by Wear into Phone (Manifest)
• Use same package name and version number (build.gradle)

82. #Devoxx #smartvoxx @sarbogast @eloudsa
Generate signed APK

83. #Devoxx #smartvoxx @sarbogast @eloudsa
Mobile APK embeds Wearable
Mobile App Module
Code
Resources
Wearable App
Wear App Module
Code
Resources

84. #Devoxx #smartvoxx @sarbogast @eloudsa
Publishing: Select Android Wear

85. #Devoxx #smartvoxx @sarbogast @eloudsa
Distribution
Companion App
Wearable App
Bluetooth
Companion
App
Play Services
Android Wear
Wearable App
Smartvoxx

86. #Devoxx #smartvoxx @sarbogast @eloudsa
Pebble
Pebble App
JS module

87. #Devoxx #smartvoxx @sarbogast @eloudsa
Smartvoxx
• smartvoxx.com

88. Demo
#Devoxx #smartvoxx @sarbogast @eloudsa

89. #Devoxx #smartvoxx @sarbogast @eloudsa
Summary
• Huge inequalities in terms of development platform ease-of-
use
• Apple obviously took time to add abstraction layers that make
development more expressive
• Short learning curve on Android Wear compared to Apple
Watch
• Tooling support not up-to-date on Android
• Documentation is not really finished for both platforms
• Not all apps make sense on smartwatches

90. #Devoxx #smartvoxx @sarbogast @eloudsa
Apps that work on smartwatches
• countdowns and timers
• status checks: what’s the temperature? what’s my next
session? what’s the score of the game?
• remote controls: switch off the light, change the music, open
my hotel room, pay for my shopping
• notification responders: invitation to a meeting -> what’s the
meeting about, somebody sent me a message -> what does it
say?
• data trackers: where am I? how many calories am I burning?
what’s my speed?)

91. #Devoxx #smartvoxx @sarbogast @eloudsa
Apps that don’t make sense
• games of any kind
• any long reading (news, books, etc.)
• ecommerce
• video or image viewing
• anything that requires text input

92. #Devoxx #smartvoxx @sarbogast @eloudsa
One more thing …

93. #Devoxx #smartvoxx @sarbogast @eloudsa
Smartvoxx on Github
Available in Black … … and White
http://github.com/smartvoxx