Kakao Impact Foundation said on Tuesday it published 'Yellow Book', a smartphone guide for people in their 60s and 70s, and is selling it on KakaoMakers.

Yellow Book is a practical guide designed so smartphone users can find and follow the functions they need. It contains 100 everyday functions, including adjusting KakaoTalk font size, hailing taxis via Kakao T, gifting mobile coupons, transferring money with Kakao Pay, using Kakao Map, planning trips using artificial intelligence (AI) and setting smartphone security.

It is structured so users can learn 1 function a day for 5 minutes over 100 days. It uses real smartphone screen images and large text, and it is bound with Smyth-sewn binding that allows the book to open flat.

It also includes a 'challenge sheet' for recording what users learn and a 'golden interview' introducing digital-life experiences of 4 people in their 60s and 70s, including announcer Jae-won Kim (김재원) and car travel writer Young-sun Yoon (윤영선).

The foundation produced the book based on teaching experience accumulated from its 'visiting senior digital school' programme run since 2024 and on questions frequently asked by participants. It was designed so users can learn needed functions at home without visiting a training site.

The foundation defined people in their 60s and 70s, who experienced changes in both analogue and digital environments, as the 'first digital generation'. The book's name was taken from the yellow telephone directory once used to find needed contact numbers.

Yellow Book will be sold exclusively on KakaoMakers through Sept. 14 and will be shipped in stages starting in the third week of September. The list price is 15,000 won, and buyers will be given a touch pen for smartphones. It will go on sale at major online and offline bookstores from Sept. 22. Sales proceeds will be donated to senior digital education projects.

Kakao Together Value will also run a donation campaign to mark the publication. Kakao's 20 million won donation and donations raised through user participation will be delivered to the Korea Association of Senior Welfare Centers.

The donations will be used to train 100 members of a 'senior citizen digital volunteer group', in which seniors who learned digital skills earlier help other seniors learn, and to provide digital education for 1,000 local seniors.

Ryu Seok-young (류석영), chairman of Kakao Impact Foundation, said the book was planned so users can find the needed function themselves at the moment they need it and learn it directly. He said he hopes it will help the first digital generation learn everyday functions and enjoy a convenient digital life.