Firstpost
  • Home
  • Video Shows
    Vantage Firstpost America Firstpost Africa First Sports
  • World
    US News
  • Explainers
  • News
    India Opinion Cricket Tech Entertainment Sports Health Photostories
  • Asia Cup 2025
Apple Incorporated Modi ji Justin Trudeau Trending

Sections

  • Home
  • Live TV
  • Videos
  • Shows
  • World
  • India
  • Explainers
  • Opinion
  • Sports
  • Cricket
  • Health
  • Tech/Auto
  • Entertainment
  • Web Stories
  • Business
  • Impact Shorts

Shows

  • Vantage
  • Firstpost America
  • Firstpost Africa
  • First Sports
  • Fast and Factual
  • Between The Lines
  • Flashback
  • Live TV

Events

  • Raisina Dialogue
  • Independence Day
  • Champions Trophy
  • Delhi Elections 2025
  • Budget 2025
  • US Elections 2024
  • Firstpost Defence Summit
Trending:
  • Nepal protests
  • Nepal Protests Live
  • Vice-presidential elections
  • iPhone 17
  • IND vs PAK cricket
  • Israel-Hamas war
fp-logo
Fight against forgery gets boost from invisible nano barcode
Whatsapp Facebook Twitter
Whatsapp Facebook Twitter
Apple Incorporated Modi ji Justin Trudeau Trending

Sections

  • Home
  • Live TV
  • Videos
  • Shows
  • World
  • India
  • Explainers
  • Opinion
  • Sports
  • Cricket
  • Health
  • Tech/Auto
  • Entertainment
  • Web Stories
  • Business
  • Impact Shorts

Shows

  • Vantage
  • Firstpost America
  • Firstpost Africa
  • First Sports
  • Fast and Factual
  • Between The Lines
  • Flashback
  • Live TV

Events

  • Raisina Dialogue
  • Independence Day
  • Champions Trophy
  • Delhi Elections 2025
  • Budget 2025
  • US Elections 2024
  • Firstpost Defence Summit
  • Home
  • Tech
  • News & Analysis
  • Fight against forgery gets boost from invisible nano barcode

Fight against forgery gets boost from invisible nano barcode

Shayne Rana • September 13, 2012, 11:34:49 IST
Whatsapp Facebook Twitter

Scientists in the United States have made an invisible version of square modern barcodes using nanoparticles and fluorescent ink to help in the fight against

Advertisement
Subscribe Join Us
Add as a preferred source on Google
Prefer
Firstpost
On
Google
Fight against forgery gets boost from invisible nano barcode

Scientists in the United States have made an invisible version of square modern barcodes using nanoparticles and fluorescent ink to help in the fight against counterfeiting.

Blocks of black and white Quick Response (QR) codes are increasingly common in marketing and can hold a hundred times more information than traditional barcodes. Smartphones can scan them in printed adverts to navigate to company websites.

Researchers have found out how to print them with inks that are only visible under laser light, giving them potential in the fight against fake banknotes and counterfeiting, which the OECD estimates costs the world economy more than $250 billion a year.

STORY CONTINUES BELOW THIS AD

The invisible QR code, made by scientists at the University of South Dakota and South Dakota School of Mines and Technology, is made of tiny nanoparticles mixed into fluorescent ink, which can only be seen when illuminated with a near-infrared laser.

More from News & Analysis
What is the US HIRE Bill and why is India’s $250-billion IT sector worried? What is the US HIRE Bill and why is India’s $250-billion IT sector worried? Is the internet dead? What's this theory that OpenAI's Sam Altman says might be true? Is the internet dead? What's this theory that OpenAI's Sam Altman says might be true?

Keeping forgers at bay

Keeping forgers at bay

The process is known as ‘upconversion’ where the nanoparticles absorb photons at a certain wavelength and then emit them at a shorter wavelength visible in normal light.

“We can also change our parameters to make it even more difficult to counterfeit, such as controlling the intensity of the upconverting light or using inks with a higher percentage of nanoparticles,” said Jeevan Meruga, who led the research.

Once lit up with the laser, the code can be scanned with a mobile phone, but the technique allows deeper levels of security with the ability to conceal information that can only be read with a microscope.

The invisible codes can still be read after paper has been folded many times and can also be printed other materials, including glass and flexible plastic film, so they could be used for a variety of products vulnerable to faking.

The research was published in the academic journal Nanotechnology.

Reuters

Tags
Currency forgery nanotechnology Barcode Nanoparticles Science and Technology QR Code Counterfeiting US currency bank notes Quick Response Code South Dakota School of Mines and Technology University of South Dakota
End of Article
Written by Shayne Rana
Email

Shayne has an exceptional love for superheroes, action figures, comics, retro music and movies. His love for the 80s is also very evident in his lingo which is populated with words like 'Yes Siree Bob', 'Scooby-doo', Howdy and lots, LOTS more. As the Deputy Editor of tech2, Shayne stays fit by running back and forth between his desk, the tech team or some other department. see more

Latest News
Find us on YouTube
Subscribe
End of Article

Top Stories

Israel targets top Hamas leaders in Doha; Qatar, Iran condemn strike as violation of sovereignty

Israel targets top Hamas leaders in Doha; Qatar, Iran condemn strike as violation of sovereignty

Nepal: Oli to continue until new PM is sworn in, nation on edge as all branches of govt torched

Nepal: Oli to continue until new PM is sworn in, nation on edge as all branches of govt torched

Who is CP Radhakrishnan, India's next vice-president?

Who is CP Radhakrishnan, India's next vice-president?

Israel informed US ahead of strikes on Hamas leaders in Doha, says White House

Israel informed US ahead of strikes on Hamas leaders in Doha, says White House

Israel targets top Hamas leaders in Doha; Qatar, Iran condemn strike as violation of sovereignty

Israel targets top Hamas leaders in Doha; Qatar, Iran condemn strike as violation of sovereignty

Nepal: Oli to continue until new PM is sworn in, nation on edge as all branches of govt torched

Nepal: Oli to continue until new PM is sworn in, nation on edge as all branches of govt torched

Who is CP Radhakrishnan, India's next vice-president?

Who is CP Radhakrishnan, India's next vice-president?

Israel informed US ahead of strikes on Hamas leaders in Doha, says White House

Israel informed US ahead of strikes on Hamas leaders in Doha, says White House

Top Shows

Vantage Firstpost America Firstpost Africa First Sports
Latest News About Firstpost
Most Searched Categories
  • Web Stories
  • World
  • India
  • Explainers
  • Opinion
  • Sports
  • Cricket
  • Tech/Auto
  • Entertainment
  • IPL 2025
NETWORK18 SITES
  • News18
  • Money Control
  • CNBC TV18
  • Forbes India
  • Advertise with us
  • Sitemap
Firstpost Logo

is on YouTube

Subscribe Now

Copyright @ 2024. Firstpost - All Rights Reserved

About Us Contact Us Privacy Policy Cookie Policy Terms Of Use
Home Video Shorts Live TV