Guests can choose to purchase Disney Premier Access via the Disneyland Paris App, or at select locations inside the parks. They can then use the digital service to book an assigned time slot for some attractions and skip the standby queue. Prices vary from 8€ to 15€ ($9.46 to $17.74) per person per ride, depending on the attraction and day of use.
Walt Disney World is leaning more on the My Disney Experience App with the recent launch of MagicMobile Pass, allowing guests to use their smartphone as their entry ticket. It makes sense that this would later extend to FastPass use.