The interesting new feature is that the networks parameter is simply a set of key-value pairs, and you can use anything as the key. So instead ofmac_address, for example, you could pass a GSM Cell ID, or a Bluetooth Device Address.….  

Once I’ve done that — gluing the Bluetooth Device Address, using the key bd_addr to the Plaze — I can now build a mobile application that scans for Bluetooth addresses and queries Plazes 

 

This is where it gets more interesting as far as Roomware is concerned, their method of using these keys as identifiers for presence could serve as an interesting use case for our own implementation of this sort of location ‘mapping’. One simple Roomware example we often talk about is using a batch of Roomware servers to act as Zones for a location for instance. Whenever someone is near one of the Roomware servers they are detected and can be placed on a map which can then be used by other applications to make a friend locater at large events or a historical timeline of visitor activity.  It’s nice to see some more working implementations in this field and maybe even the start of some standards for working with presence and network identifiers. 

To see what this future world would be like, a pilot project involving dozens of volunteers in the University of Washington’s computer science building provides the next step in social networking, wirelessly monitoring people and things in a closed environment. Beginning in March, volunteer students, engineers and staff will wear electronic tags on their clothing and belongings to sense their location every five seconds throughout much of the six-story building. The information will be saved to a database, published to Web pages and used in various custom tools. The project is one of the largest experiments looking at wireless tags in a social setting.

The RFID Ecosystem project aims to create a world that many technology experts predict is just on the horizon, said project leader Magda Balazinska, a UW assistant professor of computer science and engineering. The project explores the use of radio-frequency identification, or RFID, tags in a social environment. The team has installed some 200 antennas in the Paul Allen Center for Computer Science and Engineering. Early next month researchers will begin recruiting 50 volunteers from about 400 people who regularly use the building.

“Our goal is to ask what benefits can we get out of this technology and how can we protect people’s privacy at the same time,” Balazinska said. “We want to get a handle on the issues that would crop up if these systems become a reality.”

via UWnews.org

So say researchers and developers who are finding ways to make the tiny devices much more than just a hi-tech price tag that can help shops and supermarkets track cans of beans from warehouse to store shelf.

“It all started with simple radio tags and asset tracking,” said Gerd Kortuem, “but that really only gives you an identifier for an object.”

Now, said Dr Kortuem, tiny Radio Frequency ID (RFID) tags are getting smarter and more communicative as bigger memory, basic processing power and wireless technologies are added to them.

“We are trying to embed a little more intelligence beyond location by adding sensors and by networking these objects together,” he said.

Safe and sound

Dr Kortuem and colleagues are working on a project that combines smart tags and personal identifiers to keep an eye on people working on construction sites using heavy machine tools.

“It’s to keep track of how long they are used, to figure out vibrations generated by these tools,” he said. “It’s for health and safety. We create personalised health and safety records for every worker.” read complete article over on the bbc News site here

“Wireless tracking systems could be used to protect patients in hospitals and students on campuses, backers of the technology said.

The combination of Radio Frequency Identification (RFID) tags and wi-fi allows real-time tracking of objects or people inside a wireless network.

Angelo Lamme, from Motorola, said tracking students on a campus could help during a fire or an emergency.

“You would know where your people are at any given moment,” he said.

Marcus Birkl, head of wireless at Siemens, said location tracking of assets or people was one of the biggest incentives for companies, hospitals and education institutions to roll out wi-fi networks.

Both firms were at The Wireless Event, in London, this week selling new products in the area of so-called real-time location services.

Siemens is pushing a complete system, developed with Finnish firm Ekahau, which can track objects or people.

Battery powered

Battery-powered RFID tags are placed on an asset and they communicate with at least three wireless access points inside the network to triangulate a location.

There needs to be standards put in place so the data is not abused for other purposes
Marcus Birkl, head of wireless at Siemens

Mr Birkl said: “The tags have a piece of software on them and they detect the signal strength of different access points.

“This information is sent back to the server and it then models the movement of the tag depending on the shift in signal strength detected.”

For the system to work, the building or area that has been deployed with a wireless network needs to have been mapped and calibrated.

To effectively locate objects a wireless access point is needed every 30 metres and Siemens said it was able to pinpoint assets to within a metre of their actual position.

Mr Birkl said: “It’s very useful for the health care industry – where there are highly expensive pieces of mobile equipment that move around a hospital.

“At every point in the day health staff need to know where it is.”

The system can also be used to track wi-fi equipped devices, such as laptops, tablet PCs and wi-fi enabled phones.

“You can record movements over a period of time. You can see if the security guard in the night makes the right rounds, for example,” said Mr Birkl.

He added: “You can set certain boundaries and parameters. If a certain device enters or leaves an area it could trigger an alarm.”

‘More popular’

As wi-fi becomes more popular in schools, the technology could also be used to track students.

Hospital patient
RFID tags could track patients and equipment

“It has to be aligned with the understanding of the people who are tracked,” said Mr Birkl.

There have been privacy concerns expressed in some quarters about RFID tags, especially around the possible use of tags on shopping goods to monitor consumer spending habits.

RFID supporters have pointed out that the tags cannot be read at a great distance, but combining the technology with wi-fi raises the possibility of remote tracking.

Tags on products are typically passive – they have no power source and are only activated when read by a scanner in close proximity. These tags contain only an identifying number and can be small enough to embed in a sheet of paper.

But the tags used in conjunction with a wi-fi network have to be active – they need a power source and have software installed on them that communicates with the wireless access points.

The tags, therefore, are larger in size, and currently are impractical for use on anything other than high value consumer goods or, potentially, on people.

“There needs to be standards put in place so the data is not abused for other purposes,” said Mr Birkl.

He added: “But there are clear benefits to keeping people safe.”

More than half of respondents to a recent pan-Europe consultation on RFID said regulations were needed to police the use of tags.”

via bbcnews