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Prototype Nokia phone recharges without wires

Pardon the cliche, but it's one of the holiest of Holy Grails of technology: Wireless power. And while early lab experiments have been able to "beam" electricity a few feet to power a light bulb, the day when our laptops and cell phones can charge without having to plug them in to a wall socket still seems decades in the future.

Nokia, however, has taken another baby step in that direction with the invention of a cell phone that recharges itself using a unique system: It harvests ambient radio waves from the air, and turns that energy into usable power. Enough, at least, to keep a cell phone from running out of juice.

While "traditional" (if there is such a thing) wireless power systems are specifically designed with a transmitter and receiver in mind, Nokia's system isn't finicky about where it gets its wireless waves. TV, radio, other mobile phone systems -- all of this stuff just bounces around the air and most of it is wasted, absorbed into the environment or scattered into the ether. Nokia picks up all the bits and pieces of these waves and uses the collected electromagnetic energy to create electrical current, then uses that to recharge the phone's battery. A huge range of frequencies can be utilized by the system (there's no other way, really, as the energy in any given wave is infinitesimal). It's the same idea that Tesla was exploring 100 years ago, just on a tiny scale.

Mind you, harvesting ambient electromagnetic energy is never going to offer enough electricity to power your whole house or office, but it just might be enough to keep a cell phone alive and kicking. Currently Nokia is able to harvest all of 5 milliwatts from the air; the goal is to increase that to 20 milliwatts in the short term and 50 milliwatts down the line. That wouldn't be enough to keep the phone alive during an active call, but would be enough to slowly recharge the cell phone battery while it's in standby mode, theoretically offering infinite power -- provided you're not stuck deep underground where radio waves can't penetrate.

Nokia says it hopes to commercialize the technology in three to five years.

New Mobile Malware Silently transfers account credit

Article from ZDnet by Dancho Danchev

Kaspersky Lab today warned users of five newly found variants of the Trojan-SMS.Python.Flocker mobile malware, targeting an Indonesian mobile provider’s service allowing users to transfer money or minutes to each other’s accounts. SMS Python Flocker is a known mobile malware family, whose previous versions used to automatically send SMS message from the infected mobile device to premium-rate numbers operated by the malware authors.

Once infected with the latest variant, the malware would transfer credit from the infected device by silently SMS-ing the provider’s credit transfer service with the desired amount of credit.

Such mobile credit transfer services are used internationally, however, compared to simple cash/account credit transfers, in the long term mobile malware authors would continue looking for ways to steal hard cash. Since the first releases of the RedBrowser in 2006, which was silently sending SMS messages (screenshots) to premium-rate numbers, mobile malware authors have been looking for ways to monetize the infected devices. What has changed since then is the growth of mobile payments/m-payments and mobile wallets, whose popularity is proportionally empowering potential mobile malware authors with all the purchasing power an infected device has.

For the time being, among the main reasons why we still haven’t witnessed an epidemic of mobile malware, is sadly because cybercriminals are making enough profit even without exploiting the fact that there are more people with mobile devices, than people with personal computers around the world.

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