For the time being, we must use USB drive or other storage devices to transmit data from one to another device. But perhaps we could use a stylus to suck information just like the following concept design called iDrop in the near future.
iDrop stylus pen is designed by Heo Jaeyoung, Jin Hoyoung & Jung Han-Bi. The wonderful concept design integrates the functions of digital stylus and color sampler. You just use the stylus to touch contents on a screen and press the button on the top of the stylus, the information like image, text, even an application will be sucked in the stylus. And then you can also “drop out” the information to other devices for data transmission purpose.
Unfortunately it’s just a design concept at present. So for many people, an available stylus may be more practical such as the brush styled stylus.