Google’s update is part of the Google Now service that automatically brings up “cards” with relevant information from around you, based on your location. In this case, the app scans your Gmail inbox for boarding passes (limited to United Airlines for now), and will automatically bring up a QR code used at check-in when you arrive at the terminal. This feature is almost identical to Passbook for iPhones.
The Google Now travel functionality does not stop there. Once you arrive at your destination, the app will suggest places to visit and interesting events to attend, along with directions to the points of interest and weather information.
When you are at a museum for example, the app lets your do a reverse image search via Google Goggles so you can get information on the painting or sculpture you are looking at, while other cards will suggest events nearby.
There are also other cards for travelers, like the currency conversion, translation, and flight status cards. If you are abroad, you will want to keep an eye on your data roaming fees before using this feature.
As part of this app update, the Voice Search functionality has been improved, with a few extra perks you won’t get with Siri on an iPhone. This includes finding out names of songs by asking “What’s this song?” (similar to Shazam, but built-in), finding product information by asking your phone to “Scan this barcode” and posting updates to Google+ by using just your voice.
The app only works with phones and tablets running Android 4.1 Jelly Bean or newer, so if you have an older device, these features won’t be available for you.
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