These fingerprints look deep into the characteristics of the machine, logging such things as the time zone, keyboard language, operating-system version and other key identifiers.

BBC: How hardware hacking (almost) made me a fraudster

These devices seek to move beyond the mouse and physical keyboard, letting people communicate with their gadgets by gesturing, using sign language or, in the case of Skinput, tapping on their hands, fingers and forearms.

CNN: Microsoft's Skinput turns hands, arms into buttons

Hot on the heels of Swype's own beta, the Swiftkey beta is now available to download directly from the App Market, and once installed (along with language packs of your choice), it can be used in place of your stock Android soft keyboard.

ENGADGET: Swiftkey beta brings new keyboard, world class predictive text to Android