Archive for November, 2004

Appropriate Technologies

Tuesday, November 30th, 2004

(I ran across the cartoon below some time back, and have to heartily recommend The New Yorker as a great source for cleverly humorous presentation art!)

'Would you like to purchase a videotape of your transaction?'

I’m pretty skeptical of the value of item-level RFID tagging in the retail environment, especially for such pipe dreams as RFID-based checkout (too fraught with problems from failed reads, and otherwise susceptible to fraud); use of RFID to deter shoplifting, or theft by employees, also seems to be a poor rationale to push for universal RFID tagging. It seems like there ought to be cheaper, more targeted alternatives, e.g., enhanced use of better systems for video surveillance. If it may take 5-6 (or more) years for item-level tagging to become more widespread, what will the machine vision researchers have achieved in that time?

The Power of Wal-Mart

Tuesday, November 30th, 2004

How much is Wal-Mart driving the adoption of RFID? When it makes its way into “Dilbert,” it must have achieved a certain weight in the zeitgeist, at least…

Walgetco...

“Extreme Marketing”

Monday, November 29th, 2004

In an article for StarTribune, Chuck Martin speculates on “extreme marketing:”

Most of the focus on RFID is to use the technology to track things. But with these chips embedded in your clothing, car and cell phone, extreme marketing could work this way: You might have been shopping on the Web for a particular item and decided at that time not to purchase it, though you registered with that site to notify you of future sales.

Later, when walking by the retailer that carries that product, your cell phone signals you to stop and look to your right. There, in the window, is the product you were seeking on the Web.

The retailer knows the location of the product and the location of you. Through global positioning tracking in your phone, the retailer guides you to the counter where the product is displayed. The salesperson has been sent an instant message authorizing a discount. For extreme marketing to succeed, sellers of the goods tracked will have to provide significant and tangible value to potential consumers.

A bit of fantasy speculation (retailers won’t know where you are, at least through GPS, without either your assistance, or the phone company ratting you out), but raising the vision of more-than-chance encounters between people and things. If you could be “painted” with an aura signaling various wants/desires (e.g., I know you’re carrying a copy of a Hemingway book, so might be more inclined than not to consider a vacation in Spain), your surroundings could cue off of that.

“What consumers know and don’t know about RFID”

Saturday, November 27th, 2004

Research firm BIGresearch and Artafact LLC have “launched a new qualitative/quantitative syndicated report to track consumer awareness, attitudes and opinions about the wave of RFID applications hitting the market from Texas Instruments, VeriChip maker Applied Digital, IBM and others.”

From their press release:

The second wave of the this new study of over 8,500 adults will explore the impact the recent publicity around new RFID applications has had on awareness of RFID and consumer attitudes and opinions about it. The study will also look at the sources of information consumers use to get and stay informed about RFID. Has this recent publicity fueled or abated consumers concern for privacy?

From the first wave of the study fielded in September 2004, 72% of the respondents had never heard of RFID and had no idea what it was. Those that were aware (28%) had educated themselves via the Internet versus hearing about it from traditional mass media like television, radio and print. Over 8,000 consumers participated in the September survey.

Consensual Monitoring

Friday, November 26th, 2004

Lest the discussion get too unbalanced, it’s important to acknowledge that RFID might be quite useful as a tool for consensual monitoring… tracking those who want to be tracked.

Or, in the case of kids, those whose parents would like them to be tracked. The South Florida Sun-Sentinel covers use of RFID-based tracking bracelets for keeping tabs on children in amusement parks:

Here’s how it works: Everyone in a group gets a plastic bracelet holding a wristwatch-sized device. At Wannado — where kids pretend to work in different occupations, including doctor, firefighter and news reporter — about 40 electronic frequency readers on the walls send out signals every five seconds to find the location of the bracelets.

The bracelets can be scanned at video monitors stationed throughout the park. The monitors give the location of everyone in the same party. Visitors can locate only members of their own group.

In a rather constrained domain, fairly benign monitoring (though doubtless the park owners might also mine the transactional data for information useful in figuring out where best to place the gift store, and the refreshment stands).

Not good enough vs. just good enough

Thursday, November 25th, 2004

To comment further on the CIO magazine article on the potential for Wal-Mart deadline slippage, given problems with technology, it feels more and more like RFID may be insufficiently practical in most retail settings, yet just good enough to significantly boost the risk of surveillance and erosion of personal privacy.

Reaching back a year, NCR had described “50 uses of RFID in retail”. One of those was explicit customer monitoring:

#8 – Reduced need to check merchandise carried by customer into store. Some stores require customers to leave merchandise that they are carrying into the store at a desk or provide evidence of purchase. However, if a store had RFID readers/writers and RFID-tagged merchandise, shoppers could avoid this step. Rather, at checkout, the readers would charge customers only for items with tags that indicated that they were not already paid for.

Perhaps this was just a poorly-thought-out example (a store could skip the “what did they come in with?” step, and merely be aware of what items, on exit, were known to be “the store’s property” until transferred to the customer by an actual sale), but it’s not hard to envision such deployments. And, unlike the idea of basing checkout on RFID reading, where anything less than 100% successful reading is a failure, one could merely sample customers for their RFID-tagged possessions to gain “actionable intelligence,” e.g., assign them to demographic categories, queue up advertising pitches based on things they’re known to like, etc., and compile the sort of associational dossiers that could ultimately reveal identity.

There’s a parallel here to the old national security saw about how the Good Guys need to get it right every time (e.g., in interdicting terrorists), while the Bad Guys just need to succeed once: some applications (such as RFID-based checkout) have to be effectively perfect, while surveillance just requires a bit of sampling (though perhaps the more, the better).

“Security officials to spy on chat rooms”

Wednesday, November 24th, 2004

CNET eventually (the grant, for “Surveillance, Analysis and Modeling of Chatroom Communities,” was made in September) gets around to noting that the NSF and CIA have jointly funded research on surveillance of online chatrooms.

As a CIA alum, I think it’s laudable that the CIA and NSF might be collaborating on some research, so long as it adheres to the NSF’s policies regarding open academic publication. Cross-fertilization between the Intelligence Community and the “outside world” ought to be encouraged, to fight a tendency to believe that the problems the former encounters are unique to it.

There is a fair amount of research funded by the IC directly, e.g., through ARDA, with the DOD through DARPA, or through In-Q-Tel, the CIA-sponsored venture capital organization.

CIO Magazine: Wal-Mart Deadline to be Missed

Wednesday, November 24th, 2004

A rather pessimistic take on the likelihood of Wal-Mart’s suppliers meeting the Jan. 1 aggregate (case and pallet-level) tagging deadline, as reported in CIO Magazine, entitled, Tag, You’re Late.

One of the critical issues described here–inability to accurately read tags–feels like it ought to be a show-stopper for much of item-level tagging, if this level of difficulty is already encountered with far fewer tags, in far more controlled environments:

The radio waves that underlie the technology have also caused problems in several pilots. ODIN Technologies’ Sweeney, who’s the author of the upcoming RFID for Dummies, recalls one “bake off” between competing RFID technology providers (whoever got the best read-rates would get the supplier’s business). One provider wasn’t getting a good rate so their engineer kept cranking up the power, and adding more antennas and an additional reader to the loading dock door. The read-rates never got above 50 percent.

“People’s inclination is to add more antennas and more power. In most cases, you just make it worse,” he says. “It’s no wonder they couldn’t get it to work, with one reader drowning out the other reader.” And this was a company with experience in the RFID space.

One important property of radio frequency is that it tends to act abnormally when it’s near certain elements—liquids, metals, porous objects. For Mike O’Shea, director of RFID strategies at Kimberly-Clark, this has been a problem with the company’s baby wipes. “The baby wipes absorb RF signals,” he says. “Our packaging engineers have worked on antenna designs, looking at where you place the tags and chips on products to get the best read-rates.” …

DOD Plans for RFID Applications

Wednesday, November 24th, 2004

A discussion from GovExec about DOD plans for use of RFID, including for tagging personnel:

The Navy is working on several implementations of RFID technology. In one case, the tags will be used for a special kind of cargo – the human kind. Coordinators of the Navy’s Tactical Medical (TacMed) Coordination System are experimenting with using passive tags as tracking devices for casualties.

Soldiers would wear RFID tags containing basic demographic information around their necks, much like standard dog tags, says Michael Stiney, the TacMed Coordination System program manager at the Naval Aerospace Medical Research Lab in Pensacola, Fla. A health care worker would then scan the tag, upload the information into a hand-held device, and make a few quick entries on the tag about the soldier’s condition and care.

If the appropriate communications devices are available, then the health care worker would transmit that information to a central database, making it available to others. If the equipment is not available, then the information recorded on the RFID tag would travel with the soldier to the next point, where it could be transmitted.

The experiment has been a great success at a fleet hospital in Iraq. Since RFID tags have not been issued to every soldier and Marine, the concept is limited to tracking casualties within the 118-bed fleet hospital. Patients were issued tags at check-in, and their tags were updated as they received care.

Once the system is fully implemented, Stiney expects it not only will speed treatment and improve accuracy, but also give planning information about bed space.

More NSF-funded Privacy Research

Tuesday, November 23rd, 2004

Agnik, LLC, in Columbia, MD, was recently awarded two SBIRs, from DHS and the NSF, to study privacy and datamining. The NSF SBIR:


This Small Business Innovation Research (SBIR) Phase I research project will develop a collection of privacy sensitive distributed data mining algorithms for immediate applications in domains that deal with sensitive private data. Privacy is becoming a growing concern in many data monitoring and mining applications such as network intrusion detection, fraud detection, and counter-terrorism intelligence gathering among others. However, to date, there does not exist any commercial data mining system that is capable of analyzing potentially distributed multi-party data in a privacy-sensitive manner. This research will develop technology to meet this immediate need. It will develop data mining algorithms that can work without direct access to the original sensitive data. The research will particularly focus on privacy-preserving statistical computing and clustering techniques that are particularly suitable for security-related threat management applications. The algorithmic approach is based on a combination of random projection and secured multi-party computation-based techniques. Deliverables will include a collection of privacy-sensitive algorithms and a documentation of their performance along with a demonstration.

A successful completion of this project will open up many new possibilities particularly in the domain of security and threat management for counter-terrorism which are not possible today because of due concerns about the privacy of the common citizens. Privacy-preserving data mining has numerous potential applications, with enormous potential benefit for security and economic efficiency. It also has the great virtue of offering transparency to providers of information, allowing them to understand and control the revelation of sensitive features.