A new way to encrypt a signature and fingerprints into a passport may lead to shorter lineups at customs. “This technology will give security authorities the confidence that documents are not fake,” says U of T chemistry professor Eugenia Kumacheva.
Researchers at U of T and Princess Margaret Hospital created a thin film of polymer material from capsules containing three different dyes. Each capsule has three layers, yet is just a few millionths of a centimetre in diameter. The dye inside each layer is sensitive to light at a particular wavelength – ultraviolet, visible or infrared. With high-intensity irradiation, Kumacheva uses different wavelengths to encrypt several different patterns onto a security document.
To the naked eye, the identification document might reveal only a photograph, but other detection devices can locate additional ID, such as a signature or fingerprints. “It gives a very high level of data encryption and is relatively cheap to produce,” says Kumacheva, who has secured a patent on the technology, which could be available within five years.
Recent Posts
Three Moments from Fall 2020
Convocation Hall’s new top, preparing for virtual labs, and a spectacular campus trail that’s accessible to all
What the Zebrafish Can Tell Us
How this tiny animal is helping scientists investigate disorders of the human brain