Unity3d 5.5 Enable Vr for Cardboard - unity3d

I'm almost new to Unity3D, I've watched this presentation of Unity evengelist made in February 2016:
Evengelist said and showed that to bring project to VR you need to select one checkbox (Virtual Reality Supported). Now in 5.5 version just downloaded, when I select Virtual Reality Supported it says also "you must add at least one VR SDK", also after that checkbox selected when I click play scene, I do not see two eyes screen, just ordinary view. When last year I tried to make VR for Cardboard and loaded Cardboard SDK, scene view showed two screens to each eye in play mode.
So the question - how now make VR that works on Cardboard in Unity3d? Do I still need Cardboard SDK (I don't need magnet input support or similar, just stereo and head movement support)?
Added: I don't have Cardboard SDK option in Unity somehow:

According to Unity Blog, Cardboard support is exclusive to Android only. iOS Cardboard support will be added soon.
Do I still need Cardboard SDK
I don't think you need the SDK. This is now Native support for Cardboard. Although,you can still download the Cardboard SDK and Unity will automatically use it.
And here is how to enable Cardboard SDK in Unity 5.5.

Thanks Programmer for your answer, it helped me find what my issue was. However, I've spent literally all of my time over the past few days trying to get Google Cardboard and Unity setup, so I figured I can at least post my answer too.
One problem I initially ran into was that I was trying to use GVR Unity SDK v1.1. There are several bugs in this version, so I reverted back to the GVR Unity SDK v1.0.3. This can be downloaded from the github repo: https://codeload.github.com/googlevr/gvr-unity-sdk/zip/f391c2436426857899af1c37f0720b3985631eb3
Then, I ran into multiple problems just getting things to run on android, so I found that I have to use build tools version 24.0.1. This can be downloaded using the Android SDK Manager executable.
Lastly, the "cardboard" option wasn't appearing for me as part of the drop downs, just like in the picture posted by the asker. The problem was that I was using a regular version of Unity, when I needed to actually be using the technical preview. This can be downloaded from https://unity3d.com/partners/google/daydream, and I'm running Unity v5.4.2f2-GVR13.
Then the drop down "cardboard" appeared, and I was able to follow google's official instructions (https://developers.google.com/vr/unity/get-started) and get things set up.

I ended up installing the Unity 5.6 Beta and got my Cardboard app built quite simply using the EasyMovieTexture store asset, turning on VR in Player Settings and adding Google Cardboard. It is working great in IOS and Android. I am working on turning off the Google Overlay as my app toggles between Cardboard and a simple 360 view and that is a proving a challenge. It seems from what I have read Google does not want you to turn off their overlay. I might try to do this natively on IOS.


Vuforia AR Camera working from the second attempt on Android

I have an Android application which I created using Unity and C#, it also uses Vuforia. I have an AR Camera, which shows a black screen when I have just installed the application and gave camera permission to it, but when I close the app and start it again, everything works fine. I did a lot of searches, so what I found and tried- to Switch automatic graphics to OpenGls2, to set minimization to none, etc. Upgrading Vuforia version will not work for me. Also ARCamera works for phones supporting ARCore and does not work for phones not having ARCore. So I guess, the issue is within the architecture of the phone. Any ideas on how to make it work?
It must be related to camera API. I don't know how Vuforia is trying to initialize the camera. Seems like it tries to initialize it before successful permission result on old Android versions. You can delay Vuforia initialization to be after the permission check. There is an option to set Vuforia delayed initialization, but it would be better to make a preload scene where you do check all permissions and maybe other setup and then load the scene where Vuforia is used.
Update: Please try to update xr plugins for Unity (they are packages now), update Unity itself to the latest version. Do not use unity beta. Se if there are some recommendations from Vuforia of which unity version is the latest supported. Youc also try to create a new unity project from scratch and then import the latest vuforia, then try camera on android, then if all good, import all the resources for your app.

Using google-vr unity plufin without using cardboard view

Background: Hey, I am developing a VR game for mobile similar to pokemonGo. I tried using unity's Input.gyro.attitude but it doesn't work very well on some devices (S6 for example).
I searched and found google-vr, that is built for google carboard I installed it and added the GvrControllerMain prefab and it tracks the gyroscopic movement perfectly for all devices.
My question is: is there any way to use this sdk but disabling the cardboard view? I just want to get the tracking out of it.
Versions: I'm using unity 5.6.2f1 and the latest version of google-vr

Google VR SDK for Unity - Reticle not aligned

I've been working with the Google VR SDK for Unity but I've run in to some weird issues with adding a reticle, specifically using the GoogleVR prefab GvrReticle. Up until a couple weeks ago the reticle was lined up and looking fine in my projects but now I can't seem to get the reticle to work properly, both installed on device(iPhone or Android) or in the Unity preview mode. It appears slightly misaligned so that when you wear the device in it's headset you will get two dots instead of one reticle.
Even in a sample project that just includes the SDK and the barebones necessary for a reticle the result is the same(a double-vision reticle).
Has anyone else run into this problem or would know what might possibly be causing it?
I'm using the latest versions Unity(5.4.1f1) and googleVR(unity sdk v0.9.1) and I've tried doing builds on both PC and Mac with seemingly the same results. I've uploaded a sample project here: https://dl.dropboxusercontent.com/u/64965870/ReticleSample.zip
Had the same problem, solved with the new GoogleVR SDK Ver 1.10 (https://github.com/googlevr/gvr-unity-sdk)
try and replacing the current SDK with the newest, it's pretty easy to replace.

Should I enable VR support for google cardboard in Unity

I'm creating my firs VR app i unity for google cardboard. I noticed VR support setting in the inspector. I searched a little bit and it isn't clear for me if I should enable it for google cardboard. Here is the link for unity manual about it. Thanks for help!
For a while you should not enable VR support since Unity has no native support for Cardboard yet, although it was announced on Vision Summit 2016 for future versions.
By now, you should only use the Unity package with the appropriated prefabs for Google Cardboard available at https://developers.google.com/vr/unity/download.
You dont need to check Virtual Reality Supported to make an app for Google Cardboard. Make sure that you download the Google VR SDK for Unity and bring it in your assets folder in your project. Then just search for GVR Main in your assets folder and bring that into your project scene and you are good to go. Also you may not need the default camera in the scene as well. Just create your scene and your build is automatically supported for Google Cardboard. VR Supported is largely for computer dependent devices like the Oculus Rift and not apps that you run on your mobile phones.

Unity: how to embed a VR Cardboard game into a website

Right now, I think there is not a way to do it within Unity. This is what I have found so far (please, correct me if I'm wrong):
The most popular VR plugins compatible with Unity for both Android and iPhone are Durovis Dive SDK and Google Cardboard SDK.
I have read that most Android phones are compatible with those VR plugins. My experience is that just a few are compatible. Durovis Dive SDK seems to be the most compatible one nowadays. If the Android phone has not gyroscope and the game has the Google Cardboard SDK plugin, the game won't load or crash. If the Android phone has not gyroscope, the game will load but the image will be still when we move the phone.
Unity 5.3 has been just released. It includes WebGL support. It includes VR support. Samsung Gear and Occulus are supported. However, I have not found out anything about the compatibility with others Android or iPhone devices. Maybe it works (I have not test it. I have not found somebody who has test it yet).
Here there is a list with VR technology for the web.
We can find stuff to Export an Unity scene to Three.js. Scripts and animations don't seem to work though.
I just spoke with an industry leader in VR experiences for media companies a couple weeks ago. And his company was one of the first to attempt VR in a web browser through mobile. He said it didn't work very well. He was partially successful, but if his company had problems, I'm guessing it's still a few years off. He said new additions to HTML are coming that will improve this over the next few years.
Hope that helps!
could you try WEBVR
YouTube Tutorial: Demo WebVR Unity
Although it has some defects, but it can serve you for basic applications. I was testing it with 360 videos, this was very heavy for the platform.
You may try WebXR. But you can't add both SDK at the same time.