How your heartbeat could replace passwords

Mobile handset maker Nokia is bought by Microsoft, Google announces that KitKat will be the official name of the latest version of its Android operating system and a wristband which could replace your ID cards, house keys or passwords by measuring the rhythm of your pulse has been announced by technology company Bionym.

BBC Click's Spencer Kelly looks at these and other tech news stories.

Watch more clips on the Click website. If you are in the UK you can watch the whole programme on BBC iPlayer.