SK Telecom has completed the development of the smart braille educating system running on its Nugu voice-activated artificial intelligence (AI) speaker to help the visually impaired learn braille much more easily, the company said Monday. The nation's top mobile carrier has cooperated with Ohfa Tech, a developer of the braille teaching device, Taptilo. The telecom company will offer 110 devices to schools for the blind and households within the month and verify the effectiveness of the system in cooperation with Kangnam University. The number of people who are visually impaired is estimated at about 300,000 in Korea, and 95 percent of these people are not able to read braille due to the shortage of specialist teachers, according to SK Telecom. The development of the braille educating system utilizing the AI speaker is expected to lower barriers to education for the visually impaired through innovative technology, it said.