Motorola Skip, the NFC clip that lets you bypass your pattern / PIN lockscreen, was announced last week as an accessory exclusive for the Moto X. At the time, the Skip setup page linked to an app on the Play Store that wasn't yet publicly available, but that just changed. The Motorola Skip Setup app is required to get your Skip up and running. To set it up, install the app, turn on NFC on your phone, tap the skip against the back of your Moto X and follow the app's instructions. Easy.
You know, assuming you have a Skip. Or a Moto X.