What is Windows IP over USB?

It is a Windows Service that you find in Control Panel...Services window. It is needed to be running if you are developing for Windows Phone.

It enables communication between the Windows SDK and a Windows Device. If the service is stopped, application deployment and debugging will fail on the device.

If it is not started, you should start it from the Control Panel. When it is running you should see the process in the Windows Task Manager.

You can start and stop the service in the above Services screen in Windows.

What is Samsung Dex?

It is more correct to call it Samsung Dex Station (hardware) that pairs with Samsung's Galaxy S8 phone to provide you a real desktop experience that you always wanted.

Hear what VMware calls this:
"Samsung DeX redefines what a smartphone can do to keep mobile workers productive with just their smartphones."

Your Samsung Desktop would consist of a computer monitor, keyboard, mouse, Samsung Galaxy S8 and the Dex Station.
Review the below image:

As you can see in the above image, Microsoft is there with all its Office 365 products.  Microsoft's dream of entering the mobile world may still be realized although Windows Phone is near extinction.
Microsoft has played a smart hand in going with Samsung on this.

Looks like Google Drive is still accessible and there are still few more programs(Hancom Office, Citrix Receiver and VMware Horizon Client).

Hancom Office consists of Hanword (a.k.a. Hangul, hwp), Hancell (Spreadsheet), and Hanshow (Presentation program).

Citrix Receiver is a suite of products that allow client devices to connect to various desktop virtualization services offered by Citrix.

VMware Horizon:
VMware Horizon delivers true Windows desktop and applications computing experience on Samsung Galaxy S8 through the VMware digital workspace and Samsung Desktop Experience (DeX)

What is Windows Hello and how to enable it?

Windows 10 uses bio-metric signature of an individual as a security feature of a Windows 10 device, be it a Windows Phone or a Windows tablet/PC. Windows Hello makes this possible in Lumia 950 with an iris scanner. It can also be of two other types and some devices may have more than one type. As an alternative the device should also have the option of other non-bio-metric of authentication such as a pin or a username/password pair.

Lumia 950, the Windows 10 phone has an iris scanner built-in to the camera that compares an individual's iris image to the one that it stored during the initial set up and the phone is unlocked when there is match. if not, the phone asks for the pin number to be punched in to unlock.

The other Windows Hello options are finger print recognition and facial recognition.

In what follows I show some of the screen shots for setting this up on a Lumia 950 Phone. Not all types of Windows Phone has this feature.

First of all this is a high resolution photograph of a human iris from an UK site here.
It is easy to believe the iris signature is far superior to finger print if the camera is good.

Setting up Iris Recognition:

Yous start with Settings on your Lumia Phone after setting up a pin to login. In Settings look for Personalization.

Lumia950_00.png

Go down the list and click Lock Screen to open the Lock Screen Page as shown.

Lumia950_01.png

 At the very bottom you find Sign-in options. Click this link. The Sign-in options page opens as shown.

Lumia950_02.png

There is link if you want to know more about Windows Hello. But there is a Iris(Beta) Set up button. Click the button.
You get a Welcome to Windows Hello page. You can not only unlock your phone without complex passwords but you can buy stuff from Windows Store.

Lumia950_03.png

Click on Get Started. The Camera becomes active and you will be asked to move closer or farther (as the case may be) so that the camera can take its standard image of your eye as shown here.

Lumia950_04.png

You will be asked to hold your phone in front of your eyes (I did open my eyes a little more than wider to make sure he camera got it all) as shown.

Lumia950_05.png

Click Next while you are holding the camera and looking into it.

Your setting up has been successful. You may do it even with your glasses on so that with or without glasses you can unlock your phone.

Lumia950_06.png

It did work quite well. There were a few times it did not and then I had to use my pin. But this is much better.

What is Windows Device family?

Windows evolved from just windows to include 'phones'.

When Windows 8.1 was introduced Windows Runtime(WinRT) which was evolution of Windows app model came up with the Universal Windows 8 apps for both Windows and Windows Phone. Windows and Windows Phone shared a ccommon piece of code.

Universal Windows Platform was introduced beginning Windows 10. The target was no more the Windows OS or Windows Phone OS but a common platform with a unified core. This core runs on all devices in the Windows family.

Devices running this core can target can not only call WinRT APIs that are common to all devices but also Win32 and .NET APIs that are specific to device family. This means all you need to develop is a single app package that can be installed on a wide variety of devices shown here.

UWP_00.PNG

On any device, you have therefore, the guaranteed core and you add APIs on top of it specific to the device. You will conditionally access the device specific features in your code.

Here is the present line up of the device family.

UWP_01.PNG

Here is a Video from Microsoft's Channel 9 with additional information:

What is Universal Windows Platform?

You will be hearing about this more and more as Windows 10 devices start appearing in increasing numbers that may reach billions.

Before Windows 10, the OS was Windows 8.1 and there were two devices
that were targeted by code:

• Windows

• Windows Phone

Developers created Universal Windows 8 apps using a shared codebase. For
this the Windows Runtime (WinRT), an evolution of the Windows app model
was introduced as a common application architecture.

With Windows 10 that has changed. Now there are a number of devices for
which you need to code has increased. Hence Universal Windows Platform
(UWP) was born.

WinRT gets evolved to be integrated with Windows 10 Core. This core
provides a common platform for every device that runs Window 10. UWP now
calls WinRT common for all the devices PLUS also APIs(Win32 and .NET)
that are specific to the device family the app runs on. Thus UWP
provides a guaranteed core API layer for all devices.

What it means is that your can be deployed to the device type you are
using. All devices use the same runtime but have their own unique API determined by the device type. The code access for those unique APIs specific to the device are conditional.

Note: Images are from Microsoft Site.