While Zeine may believe his technology is without compare, there are competitors, though most use ether tightly or loosely coupled magnetic induction technology based on the Qi standard or magnetic resonance technology, which can wirelessly charge over a very short distance (millimeters).
The Qi (pronounced "chee") standard, developed by the Wireless Power Consortium (WPC), enables inductive or pad-style charging and short-distance (1.5cm or less) magnetic resonance charging. The specifications are supported by a list of 166 companies that reads like a who's who of electronics, such as LG Electronics, Sony Corp. Nokia and Verizon Wireless.
WiTricity, based on Watertown, Mass., has developed its own flavor of wireless charging that works at a longer distance than 1.5cm and through solid objects.
David Schatz, director of business development at WiTricity, calls the company's technology highly resonant wireless power transfer.
Schatz has demonstrated how a prototype WiTricity wireless charger, called "Prodigy," can power a device from about 10 inches away. The black, oval-shaped Prodigy charger looks much like any charging pad told in stores today. It sells for $995 and is now essentially a demo kit for engineers, researchers and entrepreneurs who would use it to develop their own charging products.
WiTricity is one of several start-ups that are part of yet another wireless power association, the Power Matters Alliance (PMA). The PMA's members include prestigious players such as Duracell Powermat, developer of the most widely used wireless charging technology today. Powermat is used, for example, in Starbucks coffee shops to allow patrons to charge their enabled smart phones and tablets on tabletops.
Then there's the Alliance for Wireless Power (A4WP), a rival group that's backed by Qualcomm and Samsung. The 50-plus members of A4WP also includes Broadcom, Haier, Intel, LG Electronics, and SanDisk.
The A4WP technology also claims spatial freedom, offering a larger charging field. That means multiple devices, such as a tablet or smartphone, can be placed on the same pad and charged at the same time.
Cota wireless charging technology is currently only available as a prototype. The pillar-shaped device demonstrated by Zeine appeared to be about 6 feet high and contained 200 transmitters. The device was hidden behind a curtain during the demonstration at TechCrunch's Disrupt show.
Cota said once the technology is miniaturized and no longer based on "off the shelf electronics," the development team will fit 20,000 transmitters into an 18-in cube box. "The more transmitters, the higher the efficiency," he said.
The charger can come in the form of a dongle that can be plugged into a device via a USB port or another connector, or charging technology can be integrated into a device's circuitry.
The Cota wireless charger delivers about 1 watt or about one-third the power a device would get being charged from a USB power signal.
Cota said that once the technology is licensed to developers and manufacturers, he envisions that it could power anything -- a cell phone, a remote control, a game controller, Bluetooth headsets, or flashlights.
"Just think, this could forever eliminate that annoying chirp from the mystery smoke detector with a dying battery at 3 in the morning," Zeine said.
Lucas Mearian covers storage, disaster recovery and business continuity, financial services infrastructure and health care IT for Computerworld. Follow Lucas on Twitter at @lucasmearian, or subscribe to Lucas's RSS feed . His email address is firstname.lastname@example.org.
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