Space-age ID system takes parts and products tracking to new heights

July 31, 2000

Think of them as barcodes with an attitude.

They're permanent, scannable, sometimes invisible, and they're popping up on items from vitamins to computer chips. They're matrix symbols, first studied for use by NASA in 1987 to help in tracking Space Shuttle components.

"In the space program, we have to track millions and millions of parts -- even tiny electrical components no larger than a dime -- to be certain of the integrity of critical systems," said Fred Schramm of NASA's Marshall Space Flight Center in Huntsville, Ala. "We need to know where each part was made, who touches it along the way and when and where it is installed."

This led NASA to study the matrix symbol - technology that takes parts identification to the next level.

At the beginning of the Shuttle program, NASA tracked parts manually. "As the flight rate increased, we were gathering as much information as several large grocery stores each day," said Schramm, manager for engineering application projects for Marshall's Technology Transfer Department. "That created a backlog of paperwork that took as long as three months to catch up with the finished product."

In the mid-1980s, NASA turned to the barcode system, saving millions of dollars annually through automatic data entry.

"Barcode labels, however, didn't work well on some parts, especially ones that were small," Schramm said. "And a sticky label isn't going to last long on a Shuttle heat tile during the return to Earth. We had to find something that performed like a barcode but would remain readable for the part's full life cycle."

Enter the matrix symbol, capable of storing as much as 100 times the information as a barcode - and in the same amount of space. The symbol is a small, square-shaped mark resembling a checkerboard. Unlike a barcode, which is scanned using a laser beam, the symbol is captured by a charged-coupled device (CCD), a solid-state chip that turns light into electric signals.

In 1997, the Marshall Center moved to introduce the permanent marking aspect of this technology into the commercial sector. Marshall formed an alliance with the developer of the "Data Matrix" symbol CiMatrix, a Canton, Mass., firm, and its parent company Robotic Vision Systems, Inc. (RVSI), to develop commercial applications for NASA's marking technologies.

"The applications for Data Matrix are unlimited," said Don Roxby, director of CiMatrix's Symbology Research Center. "Our staff has applied readable symbols on more than 80 different materials, including metal, plastics, glass, paper, fabric and ceramics. We have a method for successfully marking almost any substance or item."

The symbols have begun appearing on items used every day, said Roxby. "Because of their versatility, Data Matrix symbols are on a wide variety of products - household items like Colman'sÒ English Mustard, MennenÒ Speedstick, Wyeth-Ayerst vitamins and Kodak film."

The technology has become the method of choice for direct-part marking in the automotive, health, semi-conductor, aircraft and electronics industries, he said.

"Before this technology was available, computer chip manufacturers had no way of marking their products, and counterfeit and stolen chips flooded the market," Roxby said. "The same is true with other small electronic parts. With Data Matrix, companies can place permanent marks on their components -- an obstacle to thieves and counterfeiters."

But it doesn't stop there, said Schramm. NASA has part identification needs that go beyond marks that can be seen.

Markings might be covered by paint, cork, foam or other protective coatings. Patents are pending for six methods of reading the symbols under coatings, through containers or within an assembly. NASA is currently soliciting partners to develop hand-held devices for reading these "invisible" markings. Interested companies should contact the Marshall Technology Transfer Department.

"This identification process will have untold implications for industry, as well as NASA," Schramm said. "New marking methods - possibly ready this year - should open the door to marking parts that must operate under extreme pressure, in some cases, thousands of pounds per square inch."

NASA/Marshall Space Flight Center News Center

Related Technology Articles from Brightsurf:

December issue SLAS Technology features 'advances in technology to address COVID-19'
The December issue of SLAS Technology is a special collection featuring the cover article, ''Advances in Technology to Address COVID-19'' by editors Edward Kai-Hua Chow, Ph.D., (National University of Singapore), Pak Kin Wong, Ph.D., (The Pennsylvania State University, PA, USA) and Xianting Ding, Ph.D., (Shanghai Jiao Tong University, Shanghai, China).

October issue SLAS Technology now available
The October issue of SLAS Technology features the cover article, 'Role of Digital Microfl-uidics in Enabling Access to Laboratory Automation and Making Biology Programmable' by Varun B.

Robot technology for everyone or only for the average person?
Robot technology is being used more and more in health rehabilitation and in working life.

Novel biomarker technology for cancer diagnostics
A new way of identifying cancer biomarkers has been developed by researchers at Lund University in Sweden.

Technology innovation for neurology
TU Graz researcher Francesco Greco has developed ultra-light tattoo electrodes that are hardly noticeable on the skin and make long-term measurements of brain activity cheaper and easier.

April's SLAS Technology is now available
April's Edition of SLAS Technology Features Cover Article, 'CURATE.AI: Optimizing Personalized Medicine with Artificial Intelligence'.

Technology in higher education: learning with it instead of from it
Technology has shifted the way that professors teach students in higher education.

Post-lithium technology
Next-generation batteries will probably see the replacement of lithium ions by more abundant and environmentally benign alkali metal or multivalent ions.

Rethinking the role of technology in the classroom
Introducing tablets and laptops to the classroom has certain educational virtues, according to Annahita Ball, an assistant professor in the University at Buffalo School of Social Work, but her research suggests that tech has its limitations as well.

The science and technology of FAST
The Five hundred-meter Aperture Spherical radio Telescope (FAST), located in a radio quiet zone, with the targets (e.g., radio pulsars and neutron stars, galactic and extragalactic 21-cm HI emission).

Read More: Technology News and Technology Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to