Amongst all the features of the Android Marshmallow, we are going to discuss how Google Now has evolved. Before Marshmallow was released, if you long-pressed the Home button on your Android device, the standard Google Now would pop up and you could check out your Google Now Cards, search, and more. That has changed to something special called Google Now on Tap.
What is Google Now on Tap does
Google Now on Tap gives you quick information about what you are looking at on your current screen without having to leave the current app when you long-press the Home button. For example, if you are listening to Górecki: Symphony No. 3 on Spotify and you want to know more about it; long-press the Home button and Google Now on Tap will present various option.
How Now on Tap works
When you long-press the Home button, Now on Tap copies and pastes the text on your screen into Google Now and opens an overlay with related information. Behind the scene, what happened is much more complex. The copy/paste action is why sometimes you may find the information Now on Tap presents not valuable.
How to enable/disable Now on Tap
If, when you long-press the Home button and you are taken to your Now Cards this means Now on Tap is disabled. You can easily enable/disable Now on Tap on your Android smartphone by going to Settings | Google | Search & Now | Now on Tap and slide the switch to either enable or disable.
Using Now on Tap in real time
Now on Tap sounds like the perfect add-on to help you get as much from your Google searching as possible, but does it stand up to real-time testing? The answer is a both resounding "yes" and a half-hearted "meh." I've used Now on Tap frequently and discovered that, at times, it's an incredibly useful tool and, at other times, it offers nothing more than a regular search might give.However, you cannot deny Now on Tap's ease of use. When I want to know more about something that's on my screen, I no longer have to open a browser, type in or speak what I want to search, and wait for the results to appear; now, all I have to do is long-press the Home screen and a varied collection of results will show up, ready for me to tap and view. For that aspect, Google Now on Tap is very much worth using. The only caveat is that the mileage you get out of it will certainly vary.