Patent ID: 8412798

Claim:
A method comprising: (a) selecting content stored on a data processing device; (b) maintaining a map of the portions of the selected content which have been delivered and those portions of the selected content which have not been delivered; (c) transporting the data processing device with the selected content at a first time and detecting in a first location, a first target device located proximate to the data processing device using the data processing device; (d) in response of detecting the first target device, delivering the selected content to only the first target device and updating the map of the portions of the content have been delivered to the first target device only while the data processing device is proximate to the first target device in the first location using the data processing device and suspending the delivery of the selected content when the data processing device is transported away from the first location and upon detecting the data processing device is no longer proximate to the first target device at a second time; (e) after step (d), transporting the data processing device to a second location, detecting a second target device using the data processing device while the data processing device is proximate to the second target device in the second location and in response of detecting the second target device using the map to deliver only to the second target device the portions of the selected content which have not been delivered to the first target device while the data processing device is proximate to the first location; and (f) after step (e), detecting when the data processing device is no longer proximate to the second target device and transporting the data processing device proximate to the first location and detecting that the data processing device is proximate to the first target device again and, as a result, in response of detecting the first target device using the map to deliver only to the first target device the portions of the selected content which have not been delivered to at least one of the first target device and the second target device.