Home > Cool, Development, Mobile > Build Day 1 Summary

Build Day 1 Summary

Just wanted to share my notes from day 1 at //build.


Day 1 Keynote

8.1 OS Beta Available

One of the biggest announcements was the preview of Windows 8.1 which you can download at http://preview.windows.com. It comes down to your machine as a KB patch that enables the update to show up in the store app on your device. You actually download and install the app through the Store. This is the first time I’m aware of that we’ve distributed an OS-level update through the store.


The update is about 2.1 GB and you can continue using the operating system while the update downloads in the background. Once the download is complete you’ll be prompted to reboot. The machine goes through several phases during the boot screen with the spinning white doughnut. The actual upgrade process takes a good 10 minutes after the download is completed (at least that’s how long it took on my Surface RT).


After the upgrade is complete you will have to go through the out of box experience again, including associating your device with a Microsoft account. But your data is still there and your apps are still installed. There is no way to revert to Windows 8.0, but the installer claims you will be able to upgrade to the final version of 8.1 when it becomes available.


8.1 Platform

The OS received 800 major features and the Windows Runtime received over 5,000 new APIs. These include things like bar code scanning, Bluetooth RFCOMM support and a lot more. I did see a lot of these demonstrated today and they didn’t feel like 5,000 new APIs. I wonder if this number includes the new Bing platform APIs (more below).


Apps appear to be much more tightly integrated. A demo showed going from Bing to Weather to Maps to OpenTable. Another demo showed going from a website with various artists to a playlist in XBOX Music. I’m hoping the session Building Apps that Work Together will provide more information.



Sprint finally has a good lineup of Windows Phones coming. The HTC 8XT looks similar to the 8X on AT&T and Verizon. They also have the ATIV S. With Sprint on board we can now claim all major US carriers have support for Windows Phone.


Bing as a Platform

To me, by far the biggest announcement in the keynote was Bing as a platform. This ‘platform’ is delivered as a set of controls that developers can just plug into their applications. Two of the most powerful demonstrated was the new map control with full 3D support and optical character recognition with language translation.


The map was beautiful and seemed to be even higher quality than the Nokia Here 3D stuff I was raving about a few weeks back. It even apparently supports scripting of the camera location and direction and does smooth animating between points. This was demonstrated with a virtual tour.


The OCR demo showed the user ‘scanning’ a business card in another language with the camera. The text was recognized and each word was framed in a border. Then with a touch, the card was translated into English in real time. Impressive stuff.


Project Spark

They closed with an updated live demo of Project Spark. I just cannot express how excited I am about this platform / game and when I got to play with it at lunch it blew me away. Multi-touch was just as fluid as could be on the 80” PixelSense screen. We created a few different games on the fly and folks from the product team were on hand to answer tons of questions. Of course it’s already been announced that we’re giving the game away for free, but I got confirmation that there will be new characters and add-ons for purchase. When asked if ‘players’ will be able to profit from their creations, the answer was ‘we have nothing to announce on that at this time’. Another attendee asked how it would be possible to import our own custom objects into the game, from, say 3D Studio. His answer was “We have nothing to announce regarding 3rd party partnerships at this time.” Telling, I think. Exciting for sure.


What’s new in the Windows Runtime for Windows 8.1

I was really glad to hear one of the first things they mentioned in this session, which is that they’ve put a bunch of work into improving performance in XAML for 8.1. Not that XAML had terrible performance issues in 8.0, I’m just really glad to see the team continue to invest engineering effort into the XAML UI technology.


A number of new controls were demoed, but probably the most important one is the HubView. We finally have a very prescriptive way of creating the fairly standard “Home” page for many Windows 8 applications.


There’s an update to WebView that allows it to correctly play in screen compositing (previously it only displayed on the top of the Z-Order, so flyouts and things were drawn under it. That’s been fixed. And we now have the ability to put islands of WebGL content in even our XAML apps if we wanted to.


There’s an interesting new option for writing apps that directly support dual screen systems. So, for example, you could have an app where a cashier sees one thing and a customer sees another but it’s all just a single app.


Speaking of Point of Sale, we now have native APIs for barcode readers and mag stripe readers. The mag stripe reader is obviously a sensitive resource. You don’t want another app stealing it away from you when the user is about to swipe their credit card. The device is actually shared across apps, but apps have the ability to capture it and hold onto it during critical times. It’s an interesting API.


There’s a new HttpClient. It looks just like the .Net HttpClient but it’s a WinRT component so it can be used in C++ and WinJS applications now as well.


They demonstrated speech synthesis. The API looks similar to the API on Windows Phone in that you create a synthesizer and tell it to SynthesizeText. What was interesting in the demo is that the text was synthesized to a stream. They then played the stream in a MediaElement but they also said it could be saved to a file or stored in the cloud. One of the things I thought was interesting is that because it’s played through a standard MediaElement it could also be “remoted” via PlayTo.


Finally, they attempted to demonstrate Bluetooth but the demo failed. They were going to control a Sphero robot but they couldn’t get it to pair.


Building an App That Connects to Devices

In this session I was hoping to see a lot of code and demos on connecting to various devices, but it was more of an overview about what’s possible. With 8.1 now supports the following:


· Fingerprint readers

· Barcode readers

· Mag stripe (credit card) readers

· Geofencing (trigger when the user enters or leaves an area)

· Virtual Smart Cards

· 3D Printing

· Image Scanning


In addition to “well-defined” interfaces for known devices, 8.1 also adds support for “custom” devices by supporting industry standard protocols like


· Bluetooth RFCOMM

· Bluetooth Smart / Low Power



· Wi-Fi Direct


This mode of talking to a device is analogous to opening a socket or a serial port and sending bytes. You have to know what packets the device is expecting (i.e. the “shape” of the data) and then you can communicate. They encouraged device developers to wrap protocols into WinRT components so that they’re easier for application developers to consume.


There is also now an official process that hardware manufacturers can go through so that the first time a user plugs in a device, Windows will download and launch the companion application. This is all hooked through the Auto Run infrastructure and the device manufacture has to go through an extra registration process, but it looks pretty cool.


Applications now have a new trigger that they can run on when they’re associated with a device. Applications that run on the custom device trigger can run for up to 10 minutes in the background, allowing for things like data sync or even potentially firmware updates while the app is not in the foreground.


In the end I felt like I would have better benefitted from attending one of the more in-depth sessions like Apps for Bluetooth, HID and USB Devices.


Developing Neural Networks Using Visual Studio

This was the last session I attended and it was mainly out of a curiosity I’ve had for a long time with Artificial Intelligence. The guy was from MS Research and he was pretty entertaining to listen to. He demystified some of the verbiage around the topic and tried to give the audience a kick start, but I still felt you needed to have some basic understanding of the subject matter to benefit from his talk. I was pretty disappointed that the title of his talk included the words “Using Visual Studio” and yet he spent less than 5 minutes running code and didn’t even explain how it worked.




Anyway, so far I’m having a great time and really looking forward to Day 2.

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