One of the biggest selling points of the upcoming Motorola Moto X is the Moto Maker tool, which allows you to customize your device by choosing colors for the back plate, front plate, and accents, as well as wallpapers, and custom engravings. But, that last one is in a bit of trouble right now, and it apparently won't be made available for the device launch...
Source: http://www.phonearena.com/news/Moto-X-custom-engraving-wont-be-available-at-launch_id46559
Source: http://www.phonearena.com/news/Moto-X-custom-engraving-wont-be-available-at-launch_id46559