Last year Google released its Popular Times feature as part of Google Now, which tells you when stores are restaurants are at their busiest. Now, in time for holiday shopping, they’re adding real time information, which means you can figure out of a store is crowded just as you’re about to get in your car or hop on the bus.
How to use it
Search for a business on Google and when you see it’s “card” click on it and scroll down till you see popular times. If there is live data, you’ll see LIVE in red followed by how busy the store is right now. Here’s an example showing “Live” status of an Apple store. You’ll find more details and instructions at CNET News.