Here's a twist on knowing thy heart. A startup is looking to
manufacture a wristband that recognizes its wearer by his or her
heartbeat. The wristband, called Nymi, then communicates with wearers'
other devices—laptops, tablets, smartphones—to unlock them when their
owners pick them up.
The wristband isn't ready for sale yet. Its creators, part of a small
Toronto-based company called Bionym, are now taking pre-orders for $79.
Bionym plans to ship Nymis in 2014. Once ready, the wristband will come
with the ability to unlock PCs, Macs, and iPhone and Android phones and
tablets, Karl Martin, Bionym's CEO, tells Popular Science.
It's not clear yet exactly how accurate Nymi (Martin pronounced it
"NIM-mi") will be, nor how convenient it will be to use. But it is a
very cool combination of technologies: It not only IDs who's wearing it
by his or heartbeat, it also recognizes gestures and its distance from
different electronic devices.
Here's how it works. When wearers put the Nymi on, sensors in the
wristband will take the person's ECG. That's the measurement that
hospitals take when they measure people's heartbeats. Although all
healthy hearts make roughly the same spiky shapes in an ECG sensor,
there are enough differences in the graph to tell different people
apart, several years of research has found.
The Nymi takes its wearers' heartbeat just once, when they put the
wristband on. Then, as long as they wear the wristband, the Nymi is able
to communicate with and unlock any devices with which it's registered.
If people take their Nymi off, it won't work anymore until it takes
another ECG measurement. That prevents others from being able to use a
lost or stolen Nymi.
In the future, Martin and his colleagues are hoping other app
developers will make programs that will let Nymi do more than what
Bionym will build in. A video* Bionym produced shows some possibilities.
Unlocking a car door with a gesture, unlocking a hotel room door,
turning on the TV to the wearer's last-watched program—those are all
things Nymi will be prepared to do, given the right app.
"Anywhere I use a password or a PIN or even a physical key or a key
card, these are all places where I'm providing my identity and I can
provide it in a seamless way with Nymi," Martin says.
Although I asked, I didn't get to try the Nymi, see a live demo of
it, or see it in its current, prototype form. Right now, the Nymi
doesn't look like it does in the video because Bionym is still
developing it. The company didn't want photos of it to get out that
don't reflect what it would look like in its final form, Martin says. He
showed me a non-working model of what their final product will be like
over Skype. The design is minimal--it's just a black wristband with a
button on top.
When I asked independent researchers if they had any concerns about
Nymi, the one thing they brought up was that it's not clear how accurate
the wristband will be at identifying users. Bionym worked with the
University of Toronto to test Nymi's ECG-IDing accuracy in more than
1,000 people, Martin says. They've found Nymi is comparable to
fingerprint recognition and more accurate than facial recognition. They
will test its accuracy further this fall.
However, such results aren't published yet in the peer-reviewed
literature. What has been published indicates it's "premature" to say an
ECG identification scheme can compare to fingerprints and facial
recognition, says Kevin Bowyer, the chair of the computer science
department at the University of Notre Dame.
Bowyer does agree the product has potential for some yet-unimagined
applications. "I haven't seen this combination of heartbeat and gesture
sensing and proximity sensing before," he says. "There's a chance
someone will figure out something really interesting that you could do
with this."
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