Developed Digital Watermarking Identity Authentication Technology

Nippon Telegraph and Telephone Communications Corporation has recently developed an identity authentication technology that uses digital watermarking technology to enable simple, low-cost identification and management.

According to the "Daily News" website reported on November 1, the so-called digital watermarking technology refers to the embedded micro-data (usually numbers, serial numbers, text, image logos, etc.) in printed matter such as books, invoices, printing and packaging, or certificates. ). After the watermark is embedded, people cannot perceive the watermark from the surface of the print. Only a special detector or software can detect the hidden watermark, and most people cannot fake the digital watermark.

The specific approach of the new technology developed by Japan Telecom Telecommunication Company is to embed digital watermarks in photographs. The processed photos are exactly the same as the original. Only special scanners can find the watermarks.

According to reports, one of the great advantages of this new technology is that photos embedded in digital watermarks need only be printed using ordinary printers and printing papers, which can effectively control costs. In addition, digital watermarks contain personal information such as identification numbers rather than date of birth, and in case of unauthorized reading, personal information will not be leaked. Researchers said that using this technology can quickly and accurately determine the authenticity of the document.