Apple Exploring Data Sharing Gestures For Future Wearable Devices

Future Apple wearable devices will be capable to transmit and receive data as simple as a handshake

Published by the U.S. Patent and Trademark Office, an Apple filing for "Gesture-based information exchange between devices in proximity" describes a secure data transfer system between two portable devices that works by detecting customizable gestures, or "greeting events", such as handshakes, high-fives, hugs, fist bumps, bows, waves, and salutes. 

The gestures triggers a customizable set of data that considers the type of device near by with out forgetting the security and privacy context of the user. You can choose what type of gestures to enable and what type of information to share so as to prevent unintentional sharing of information to other devices in near by proximity.

Whats interesting is that the information can be stored both locally or on your iCloud account on the fly.