Beware the Haunted Cordless keyboard

dr. greenthumb writes "The norwegian newspaper Aftenposten reports about an incident where a computer suddenly seemed to develop a life of its own. A game which the user could not remember using that day suddenly appeared on the screen. When he went over to shut it off the screen displayed a message asking him if he "really wanted to delete this file?" His computer was receiving keystrokes from another computer (with the same type of wireless keyboard) 150 metres away! Check out the full story and a follow-up, where experts warns against using wireless keyboards." /me plans to destroy Hemos' sanity...

Comments

Not as bad as the haunted mouse...

[telstar]

Today's mice are well known to spiral the cursor in a circular motion around your screen at a high rate of speed, clicking the screen randomly when their internal circuitry begins to fry.

I've witnessed it twice ... once at a colleague's desk, and another time during an application demo.
It's great fun to explain that the problem is the mouse and not your app to a room full of speculative non-technical people.

Re:This is just funny...

[aridhol]

In theory, yes. How many combinations of frequency and code are there? My uncle used to work in a Ford factory, and every car that rolled off the assembly line together used the same key. It's possible that they keyboards have a similar problem.

These things _have_ encryption

[geddes]

I just picked up a Logitech Cordless Access Keyboard a week ago, and I am incredibly happy with it. The convenience of being able to sit in my bad and control divx movies in mplayer is great :-)

I live in a dorm situation, so it is very possible kids who are nearbye will interfere/send keystrokes/recieve keystrokes from my computer. However, Logitech promises Cordless freedom through multi-channel digital radio technology with secure encryption.

Loitech assures us that the kind of stuff mentioned in the article cannot happen:

To avoid the chance of interference between cordless products, every Logitech cordless product integrates a 12-bit security ID, which allows the receiver to uniquely identify the emitter (i.e., the cordless device, itself) that it is listening to. The 12-bit ID provides 4096 unique combinations of digits, lowering the risk of interference to less than 0.25%. Additionally, in some Logitech cordless keyboards and mice, multi-channel RF technology allows the channel to be changed in the event of a conflict.

To further minimize the impact of the already uncommon conflict or interference, some Logitech cordless keyboards now include secure encryption that protects the security of the data being typed on and transmitted by the keyboard.

But I can't find any more details about this technology. So some logitech keyboard have encryption, some don't. I wonder how easy it is to add encryption to these thigns without latency. I don't want to press "a" and wait 2 seconds while the signal decrpyts for the a to appear on my screen. I wonder how simple or complex the encryption is on my cordless access keyboard. Is it a simple XOR like the AIM passwords or is it real encryption? I don't know. But frankly, I am not worried.

Bottom Line: zero encryption with 12-but ID codes is good enough for me. If someone really wanted to get at my credit card numbers, they would probobly come into my unlocked room and find my wallet with my credit card in it instead of building a device to pick up the radio signals from my keyboard. Logitech claims a .25% chance of interference, and as long as my keyboard work, that is also good enough for me.