Feeds

RFID remotes have line-of-sight in their sights

Batteries schmatteries

The smart choice: opportunity from uncertainty

Taiwanese electronics specialist Favite has been demonstrating its latest remote control module using RFID technology to remove the need for batteries - at least for those prepared to bathe their living room in a two-watt energy field.

Using a passive RFID tag to communicate with a TV might seem strange, but at 433MHz the range is sufficient, and a modern tag is perfectly capable of reporting which button is being pressed while collecting energy from the two-watt induction field being generated by the TV every few seconds.

Favite accepts that not everyone is going to want such a high-powered transmitter in the corner of their living room, so it's suggested that a rechargeable version could exist, or one powered with a button cell which it reckons should give ten years of life in normal use.

Most remotes still operate on infrared, which is largely line of sight and very, very, cheap. For TVs that line of sight issue has never really been a problem: why would you want control of the TV you can't see?

However, for stereo and home automation stuff wireless remotes are more common, and some Sony Bravia kit uses Zigbee-based remotes at 2.4GHz these days. Favite reckons its technology is cheaper than Zigbee, and thinner than infrared, as well as getting round the line of sight problem.

433MHz is widely used for wireless light switches and the like, and suffers from a lot of interference, but for basic commands it should be clear enough.

That's good enough for one Taiwanese TV manufacturer, with one of the big names lined up to sign a deal within the next month according to RFID Journal.

So, ask yourself, do you constantly find your remote batteries running dry at the most inconvenient moments? Neither do we, but if we did then this is definitely the technology we'd choose to solve the problem. ®

Mobile application security vulnerability report

More from The Register

next story
Yorkshire cops fail to grasp principle behind BT Fon Wi-Fi network
'Prevent people that are passing by to hook up to your network', pleads plod
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Major problems beset UK ISP filth filters: But it's OK, nobody uses them
It's almost as though pr0n was actually rather popular
Microsoft unsheathes cheap Android-killer: Behold, the Lumia 530
Say it with us: I'm King of the Landfill-ill-ill-ill
All those new '5G standards'? Here's the science they rely on
Radio professor tells us how wireless will get faster in the real world
Apple orders huge MOUNTAIN of 80 MILLION 'Air' iPhone 6s
Bigger, harder trouser bulges foretold for fanbois
US freemium mobile network eyes up Europe
FreedomPop touts 'free' calls, texts and data
Oh girl, you jus' didn't: Level 3 slaps Verizon in Netflix throttle blowup
Just hook us up to more 10Gbps ports, backbone biz yells in tit-for-tat spat
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.