Hello,

We noticed you're browsing in private or incognito mode.

To continue reading this article, please exit incognito mode or log in.

Not an Insider? Subscribe now for unlimited access to online articles.

Radio Cuffs

Each year, several thousand fatal auto accidents occur in the United States that involve drivers who aren’t even supposed to be on the road-their licenses have been suspended or revoked. Gaithersburg, Md.-based Multispectral Solutions has developed a credit-card-sized radio transmitting tag that could bag these illegal drivers.

The tag, developed with the U. S. Department of Transportation, mounts on the unlicensed driver’s car. It constantly broadcasts an ultra-wideband (UWB) radio signal containing a digital picture of the banned driver, along with information about the car and the driver’s record. Composed of nanosecond pulses, a UWB signal is immune to the interference that longer signals suffer when they bounce off nearby surfaces. A tag reader at roadside or in a police car sounds an alert and displays the transmitted data, giving police the chance to check the face behind the wheel against the face on the screen.

Want more award-winning journalism? Subscribe to Insider Basic.
  • Insider Basic {! insider.prices.basic !}*

    {! insider.display.menuOptionsLabel !}

    Six issues of our award winning print magazine, unlimited online access plus The Download with the top tech stories delivered daily to your inbox.

    See details+

    What's Included

    Unlimited 24/7 access to MIT Technology Review’s website

    The Download: our daily newsletter of what's important in technology and innovation

    Bimonthly print magazine (6 issues per year)

/3
You've read of three free articles this month. for unlimited online access. You've read of three free articles this month. for unlimited online access. This is your last free article this month. for unlimited online access. You've read all your free articles this month. for unlimited online access. You've read of three free articles this month. for more, or for unlimited online access. for two more free articles, or for unlimited online access.