The most user-friendly and secure way to enable this is by embedding a SIM card and a communication module inside the car.

ENGADGET: Accel Telecom unveils Voyager, an Android smartphone that wants to stay in the car (video)

The bracelets displayed at SIGGRAPH 2007 each contain an accelerometer that senses wrist movement and a Bluetooth module for wireless communication, which not only makes it possible to interact with other wearable's but also laptops and mobile phones.

CNN: You wear IT well

The crew will also troubleshoot -- and with some luck, fix -- the NASA communication gear attached to the U.S.-built Unity module.

CNN: liftoff

The module looks at the changes resulting from the new information environment and describes how information and communication technologies affect information operations within organizations.

UNESCO: Communication and Information