With HackRF in the hands of hackers or security researchers, in other words, no wireless signal would remain secure just by virtue of using a unique, unfamiliar frequency.

FORBES: DARPA-Funded Radio HackRF Aims To Be A $300 Wireless Swiss Army Knife For Hackers

The slower signals are sent using a different antenna using the same frequency channel.

FORBES: Wi-Fi Gets A Speed Boost

The engineers found a way to kick-start a radio-frequency device wirelessly using an external power source initially, but running the device afterward on the output of power generated by the inner ear.

WSJ: Harnessing Energy From the Body to Power Devices

McDonald was also the third physician in the world to perform a procedure called conductive keratoplasty -- a noninvasive surgery for farsightedness that involves using radio-frequency energy to heat small spots around the cornea.

CNN: Her vision: Better, clearer sight

In an announcement of sorts yesterday, DARPA reportedly said that the project's goal is to use "set of handheld devices" to track down a specific "signal emitter of interest" using radio frequency geolocation, and presumably some other measures they're not about to dish the details on.

ENGADGET: DARPA's "Gandalf" project aims to hone in on cellphones and track 'em

O'Donoghue's victory was marred when he received a two-day ban (27 and 28 May) for using his whip with excessive frequency and not giving his mount time to respond.

BBC: Black Bear Island seals Dante win

Using millimeter wave technology, which the TSA says emits 10, 000 times less radio frequency than a cell phone, the machine scans a traveler and a robotic image is generated that allows security personnel to detect potential threats -- and, some fear, more -- beneath a person's clothes.

CNN: Airport security bares all, or does it?