Chen San-yuan changed his head as he cycled past the suburbs of Taipei, the capital of Taiwan.
Attached to the front of the bike are 15 cellphones that Chen (70) uses to play augmented-reality games simultaneously Pokemon Go.
This smartphone-based game requires players to & # 39; animated characters that appear in the actual location.
Known as Pokemon Grandpa, Chen's videos and fan-shaped cellphone settings between "Pokestops" have become viral on the internet and made him a small celebrity in Tucheng district, where he lives.
"I used one cellphone and then continued playing and playing," said Chen, who wore pure white shirts and trousers, told Reuters Television on a recent program.
"After a month, it became three cellphones, six cellphones, nine cellphones, 12 and then 15," he said, crediting his grandson by introducing him to Pokemon Go in 2016.
Chen said the equipment was worth more than US4800 and he spends around $ 300 per month on virtual currency to be used in games.
Playing on many phones allows it to reach higher levels in the game faster and catch more rare creatures, he said.
Retirees say he sometimes plays all night thanks to an artificial portable battery package that recharges the phone.
Chen's friends were amazed by his energy.
"He can take care of fifteen cellphones at once," said Shih Wun-sheng (45). "Starting out to go home, Chen can stay energetic for six to seven hours, not feeling tired. That is really impressive."
Pokemon Go, developed jointly by Nintendo Co and Niantic Inc., has been the biggest hit so far among games that use what is called augmented reality, where digital characters are superimposed on the real world.