Kensington has launched a system called Proximo that it promises will alert people when items like keys and iPhones are lost or stolen.
The Proximo kit consists of an iPhone app, a key fob for a keychain, and a third device to track something else like a backpack or car, the company announced at CES. If the items get too far apart -- people can specify the exact distances, which are measured wirelessly using BlueTooth -- they sound an alarm.
The fobs and app each come with buttons that triggers an audible alarm from a paired device to help locate it. And the app offers a map for GPS-based tracking for devices that are out of range.
The kit costs $60, and additional $25 tags can be purchased to track up to five devices with the app.
Also at CES, Kensington announced a few other accessories:
The $50 TriFold Folio iPad case for fourth-generation iPads, with a protective shell back and a three-fold front cover that can serve as a stand.
The $35 PowerBolt 4.2 Dual Fast Charge car charger with dual 2.1-watt USB charging ports and two detachable older-style iPhone charging cables. Those with iOS devices using the newer Lightning port will have to use their own cables.
The $30 PowerBolt 2.1 Fast Charge car charger with a single attached Lightning cable.
The $90 Contour Overnight backpack that features a laptop compartment that can be unzipped and laid flat for easier trips through airport security. It's got a larger capacity than earlier models of the company's Contour backpack models.