Karma Go lets you take WiFi everywhere. Pay-as-you-go for data that never expires. No contracts or monthly fees. With nationwide coverage on LTE, stay connected to the internet with all of your devices, seamlessly.
Source: yourkarma.com
This is pretty cool. A teeny tiny puck about the length and width of a Post-It Note and thinner than an iPhone that gets you on the Internet anywhere. No monthly fee, no contract. Only pay for the data you use. $14 for 1GB, less if you buy more. Way cheaper than hotel rates. And when you share your connection with others, they and you both get free bandwidth. Coverage almost everywhere in the US.