Some 12-13 years ago, I started experimenting with a piece of software, called Pocket Phojo a clever piece of software that enabled me to nearly leave my laptop at home. Running on a Windows Mobile PDA with a built in CF card reader ( I had the Fujitsu Pocket Lookz, if I remember correctly) and was able to hook up to a wifi network or use a bluetooth modem to wire pictures to picture desks. Quite a lot has changed since those early days of experimenting with largely unreliable & flaky technology. However there is still not yet a single app that will do everything that a press photographer needs. There are some that come close including PhotoMechanic (on OSX) PicturePro (iOS).