This function could soon be integrated into the Google Camera app itself, and even Android’s. They are not the same. Android is a free operating system. When a manufacturer is going to include it in their smartphone, it includes some standard apps, Android apps, including the Android Camera. In addition to these, you can request a license from Google to include Google apps, including Google Camera. The best thing is that this app can be updated from Google Play, so for this function to arrive, you will not have to wait for a new update of the operating system, but simply an update of the app on Google Play.
How does it work?
Actually the function of the app is remarkably simple. We focus on that object whose price we want to know, we surround it so that the app can know which one we are referring to in case more targets appear in the shot, and it will be able to locate which object it is, if it is for sale, where we can buy it , and at what price. Here comes the benefit for Google, because for each sale that a store makes like this, it could make a profit. You could also charge stores to have their products appear before other stores, or to have similar products appear before those products we are looking for.
For now, yes, we will have to wait to see if this new function is already included in the next update of the Google Camera app from Google Play.