You may have seen a new proposal for a "mobile" top-level domain name for use by something called "mobile users" whatever they are. (The domain will not actually be named .mobile, rumours are they are hoping for a coveted one-letter TLD like .m "to make it easier to type on a mobile phone.)

Centuries ago, as trademark law began its evolution, we learned one pretty strong rule about building rules for a name system for commerce, and even for non-commerce.

I've maintained for some time that while most spam is commercial, whether something is spam is not dependent on it being commercial. Charity spam, religious spam and political spam are just as bothersome as Viagra spam.

However, fellow EFFer Larry Lessig challenged me on this by asking whether we might want to allow political spam. Spam is super-cheap to send (that's one reason it's a problem) but as a very cheap form of advertising it could be an equalizer when it comes to campaign expenses, since a candidate would low-funding could spam almost as well as one with boatloads of special interest money. That's unlike TV advertising, where the better funded candidate wins the game.

I have to admit that the current way elections are funded and political influence is bought and sold is a much more important problem than spam, so this is a question worth looking at.

Of course, it would be stupid for a politician to spam, even though they have exempted themselves from the spam laws. Spam generates such ill will (appropriately too) that I think a spam campaign from a candidate would backfire. Plus, I really don't like the idea of regulating spam based on what it says -- If it says one thing it's banned, if it says another it's OK.

But is there a germ of something worthwhile in here? What if the election officials managed the mailing list and voters had to be on it, for example.

I've been reading a number of pieces, both before and after, on the evil of Ralph Nader running for office. The arguments for the harm that could come to Nader's cause if
he "spoils" the election are possibly quite valid. I doubt Nader is
unaware of them; perhaps is he more aware of them than anybody.

I've written elsewhere about the doom of the TV commercial, and as you may know, we represented Replay TV owners in their fight to not be declared lawbreakers for skipping commercials..

Commercial skipping tools have existed for some time, my old VCR has a complex automatic commercial advance. DVR makers have been scared against doing it for a while it seems.

Everybody knows one of the big problems with exercise machines is they end up as clothesracks. I've seen this literally happen. A lot of people put their machine in front of the TV to make them use it, for a while we even had no couch.

Here's an invention to create an exercise machine you'll really use, if you watch TV. The machine, or a device attached to it, would be programmed to constantly broadcast a recorded infrared signal trained from your remote. This code would be one that would interfere with watching TV. For example, volume-mute or channel-up, or a digit. Whatever you want to train it to. (Off doesn't work as that also turns the TV on.)

However, once you get on the machine and start using it, it stops sending this code, and you can watch TV. Once you have done your exercise quota, it would stop sending the muck-up code until you are next due to exercise, whatever your schedule is.

To stop you from just covering the transmitter with clothing (remember the clothesrack?) it would also need to have a receiver some distance away which gets upset and chirps annoyingly if it can't see the regular ping from the transmitter.

Others in the house not on a regimen could enter a code on the remote to temporarily disable the system when they want to watch. If 2 or more people had a regimen, they would have to enter which person they were to activate their disabling code. That gets a bit messy but it can be done.

At the Oscars last night (which were pretty boring, with one nice joke featuring Billy Crystal camcordering a new movie) Peter Jackson thanked the Studios for having the courage to back a big fantasy epic like the Lord of the Rings.

But a look at IMDB's list of all-time movie revenues reveals something else. Of the top 25 grossing movies of all time, how many were science fiction and fantasy?

No surprise that after the RIAA started filing lawsuits against people they allege were distributing lots of copyrighted files, a movement has sprung up to build filesharing networks where the user hosting data can't be traced so easily.

Today, on Kazaa, all they need to do is try to find a file, look at what a user is sharing and try to download it. That gives them the IP address of the party in question.

Each year when Tivo reminds people they gather anonymized viewing data on Tivo usage by reporting superbowl stats, a debate arises. A common view is that it's OK because they go to a lot of work (which indeed they do) to strip the data of the identity of the user.

As noted, I've read Tivo's reports and talked to Tivo's programmers, and they did work hard to try to keep the data secure and anonymised.

RSA today announced a version of Ron Rivest's blocker tag which is a supposed defence against unwanted RFID scans.

The tag, explained simply, answers affirmatively to an entire subsection of the RFID space, so that any scanner looking for a tag in that space always hears a yes (or gives up) and thus can't find a tag in that space.

I like to use our Rio Karma MP3 player in the car, but it's not nearly as good as it could be. So here are some jottings on what an ideal car dock would do for the player.

• Power and charge the player, of course
• Offer various options for sending audio to the car, including a built-in quality FM transmitter, a port for a special Cassette sized interface (more below) and various cables for car stereos that have an accessory jack (as mine has for a trunk CD-changer) or plain audio inputs.
• A wireless remote control to stick on the wheel (not needed if other remote control methods can work.)
• A microphone.
• To get really fancy, an 802.11 interface to allow it to sync up with computers inside the house while in the driveway. Though strictly, this would be even better inside the player, not in the dock.

The microphone would perform several roles. One, it would detect the ambient sound level in the car, and boost the music volume as the car gets noisier. No more super-loud when you start the car either.

Secondly, it would listen for the sound of the music the player is playing. It would try to tell if it was playing, so it could detect when the stereo is turned off or switched to something else, or when the car is turned off (if the loss of power from the accessory jack doesn't already reveal this.) When the sound stops (even if this takes 5 seconds to confirm) just pause the music back in time when the sound was first detected to stop. One could then from time to time send out pulses of the forthcoming audio, and if it hears them, treat that as a resumption of play.

Many people, trying to address concerns about the privacy implications of RFID tags have indicated that it can just become the norm, or even a requirement, to "burn" out the RFID tags in purchased products as they are sold.

I've just put up a new essay on my web site on whether challenge/response anti-spam systems are good or bad

As some may know, I've been running such a system longer than anybody, having written one in 1997. I wrote a white paper on best practices for such systems that some have found useful.

Generally, I'm the last person to suggest we use technology to control people's lives and what they view. However, it's also the duty of parents to help teach their children how and when to use the media. Most commonly today you see things like the V-chip, which let parents block their unskilled children from seeing shows with certain "ratings."

As I noted earlier, there are all sorts of risks with remote voting over the internet, even if I suggest a way to make it doable. However, this is different from the question of voting machines. Like the folks at Verified Voting I believe that a voter-verifiable paper ballot is the simplest way to make computerized voting more secure. And I like voting machines because they can improve access and even make preferential ballot possible down the road.

In 2000, the Florida Presidential election ended up in a tie. Many people get offended at that remark, because they don't think of elections as being compatible with ties, they insist that their candidate really won.

However, to scientists, you have a tie when the results differ by less than the margin of error. And I refer not simply to the margin of error from the problems in the voting machines, but a much more bizarre margin caused by political pressure to interpret the results in different ways.

Reading this NYT article about radar to cover car blind spots, which describes a system that will trigger lights in the rearview-mirror when cars are in the blind-spot, reminded me of an old idea I had some time ago I called "Eyes in the back of your head."

The idea would be to wear a special collar while driving. This collar would contain small electrodes that could lightly stimulate the skin on the back of the neck. Perhaps just one row, but ideally a small 2-D image should be possible.

This would be connected to a camera, radar or sonar system pointing back from the vehicle. It would map where other vehicles are, and turn that into an image on the back of the neck.

Thus, as a car came up behind you and passed you, it would feel like something brushing the back of your neck on one side.

I was inspired to this by reading about a system for the blind that mapped a video camera image onto a 2000 pixel electrode map on the stomach. It was found that over time, the nerves would retrain and a sort of limited vision could develop. Might this have application in driving, or perhaps combat?

I hinted last week I would write about a peril from and to automatic cars, or actually any drive-by-wire cars.

That peril is they become highly useful terrorist weapons. Today terrorists get kamikazis to drive ordinary cars to attack targets and checkpoints. It will be easy to modify a drive-by-wire car (including the self-parking cars already on the market) to be controlled by the cheap remote controls found on toy cars and planes today, and easy to mount a wireless camera (X10, the terrorist's tool!) as well.

We've all seen public bathrooms where the women have a line snaking out into the hall, but we guys can just "whiz" in and out. We have sympathy (but not too much, see the joke)

Here's a good solution that will probably never fly because we're uptight. Two bathrooms: One small one with nothing but urinals for men, and another one with nothing but stalls to be shared among the sexes.

In my home I now have a "home computer", for a while in the kitchen, now in the living room. Of course I have had computers in my home since the 70s, but this one is different. It's an old cheap laptop I picked up, not powerful at all. What's different is how I use it.

In general, I agree with the recommendations several security experts wrote condemning the new overseas military voting system SERVE, because voters used unsecure Windows PCs to vote.