We live in a world where the 7.3 billion people on the planet now have an estimated 3.4 billion smartphones. 70% of the U.S. population has a smartphone, and they’re using them: [Mobile commerce is expected to account for 34.5% of total e-commerce sales this year](https://www.retaildive.com/news/mobile-commerce-to-dominate-online-sales-by-2021/508403/), and it’s further anticipated to surpass 50% by 2021, according to eMarketer’s Mobile Commerce Roundup.

To add some perspective, each one of those devices possesses greater and faster processing power [than the computers used in the Apollo missions](http://www.nasa.gov/audience/foreducators/diypodcast/rocket-evolution-index-diy.html), which NASA used to put humans on the moon.