delivery services such as news (e.g., stock prices),
weather alerts, reminders (e.g., payment due),
updates (e.g., new products, upgrades), and the
delivery of promotional items (e.g., coupons,
discounts, specials) to mobile devices can act as
external drivers. For instance, a reminder received
on a mobile device for an upcoming birthday
accompanied by a list of recommended gifts,
discount offers, and information on nearby stores or
a list of links to Web site addresses can motivate the
recipient to start the buying process for a gift.