Starbucks has launched its Mobile Order & Pay system in Portland, Oregon ahead of the solution being rolled out across the US in 2015.

The system enables customers to place orders in advance of their visit and pick them up at their chosen Starbucks store, and is integrated into the popular Starbucks app and mobile loyalty scheme.

Customers can order food and beverage items through the system, with all the standard in-store customisation available, enabling customers to select size, number of espresso shots, dairy selections and more. The feature uses GPS functionality to find local stores that offer the system.

The coffee giant has also opened its first Reserve Roastery and Tasting Room in Seattle, with plans to incorporate Bluetooth beacon technology into the restaurants features next year.

The Reserve Roastery and Tasting Room, located just nine blocks from the brands first ever store in Pike Place Market, offers the rarest coffees from around the globe in an interactive experience for visitors that demonstrates the craft of coffee roasting and preparation.

100 of the restaurants are planned around the globe, aimed at premium consumers and promoting the brands Starbucks Reserve line, which deals solely in small-batch arabica coffees. The beacon technology planned for the restaurant will enable customers to access information about their freshly brewed coffee via mobile devices.