123 Portland is your private gate to your very own residence, wherever you might be. Access your Facilities Reservations, Concierge, Front Desk and Repair Requests, control Visitors Access, view and accept Deliveries, keep in touch thru our Internal Messaging System, all thru your iPhone or iPad, no matter where you are. Since 123 Portland uses GPS Localization running on the background in order to improve the accuracy of some of its features, the continued use of GPS running in the background can dramatically decrease battery life.