  This Electronic Wristband Uses Your Heartbeat to Replace
Passwords for Devices  It’s a sentimental confirmation –
 technology can recognize you by your own, unique heartbeat. At
least, that’s the pitch for this tiny, wristband called Nymi
that can replace all the password typing you do in a day. It’s
discreet, but is it safe? Given that Apple’s fingerprint
identification technology was hacked almost immediately on its
release, will this little bracelet be the next target?   The
Nymi uses your unique electrocardiogram (ECG) to authenticate
your identity through an embedded sensor. It then uses Bluetooth
Low Energy to communicate your identity to all of your devices,
bypassing any verification obstacles… The Nymi also has motion
sensing and proximity detection that allows users to perform
remote, gesture-specific commands, creating a dynamic and
interactive environment. A simple twist of the wrist can unlock
your car door.  Now, the obvious question is, whether the device
will be able to detect unusual activi