Plus, if you took off from somewhere cold (say, London) and then landed in somewhere warm (say, Istanbul), you are very likely to forget your coat.

ECONOMIST: Business travel

Equally, if you leave the stylus on a desk somewhere and try to walk off, the phone -- courtesy of its accelerometer -- alerts you to the fact that it's being moved without its buddy.

ENGADGET: Samsung Galaxy Note II: hands-on with the new S Pen-toting phablet (video)