Toilet roll for wiping smartphones, installed by Japanese mobile phone company NTT Docomo, is seen in a high-tech bathroom equipped with bidet and heated seat at Narita international airport in Narita

Toilet roll for wiping smartphones, installed by Japanese mobile phone company NTT Docomo, is seen in a high-tech bathroom equipped with bidet and heated seat at Narita international airport in Narita

A toilet roll for wiping smartphones (R), installed by Japanese mobile phone company NTT Docomo, is seen in a high-tech bathroom equipped with bidet and heated seat at Narita international airport in Narita, Japan, December 28, 2016. Photo: Toru Hanai/ Reuters

January 18, 2017 2:54 PM (UTC+8)