Thai Digital ID Company Limited was established in 2000. It has its first key pair, called "Root Key," generated on September 4, 2000. The Key Generation Ceremony was witnessed by representatives of government bodies and reputable figures from various industries, such as Ministry of Justice, Ministry of Commerce, Telephone Organization of Thailand, Communication Authority of Thailand, and an International Audit firm.
TDID deploys the certification service based on the hardware and software internationally certified by FIPS 140-2 and EAL 4+ as well as the ISO 27001 standard for CA operation management and WebTrust for CAs. There are four types of certificate currently issued by TDID CA: SSL Certificate, Computer/Equipment Certificate, Enterprise Certificate and Personal Certificate.