Google's previous AR effort: Tango devices required additional IR and depth sensing cameras, whereas ARCore is now available on Google's Pixel phones as well as the Galaxy S8 phones. Moreover, it doesn't require any special hardware.
"Thank you to our incredible community of developers who made such progress with Tango over the last three years", said Google.
So far Google has been testing the waters with ARCore through the release of AR Stickers, which is a mode for the Pixel's cameras that allow users to introduce characters into your camera scenes that can match lighting to look like they're really there, which you check out for yourself in the video above. Google responded with ARCore, which is similar but somewhat more limited due to the heterogeneity of the Android ecosystem. With ARCore's launch, Tango seemed pretty much dead in the water since the new platform will bring augmented reality to more phones with less hardware. Tango support will end on March 1, 2018.
Google's decided it's no longer time to Tango.
As of now, ARCore is only available on Pixel devices and the Samsung Galaxy S8 and Galaxy S8 Plus. Later it came with the Lenovo Phab Pro and Asus Zenfone AR. That's a lot of phone to have to tote around just to superimpose AR graphics on things.
All the Tango developer resources will be offline starting this coming March, but much of the core Tango experience lives on in ARCore.
While Project Tango requires specialized hardware in a smartphone like special cameras and sensors, ARCore doesn't need any of that, as it relies exclusively on software.