Guests checking in for a relaxing break are invited to hand over any personal communications devices which are locked away in the manager's office. The owner can request the return of the item at any time.
"I was really addicted to my BlackBerry. I had an obsession with email morning and night," he told the news agency. "There came a time when I didn't think it was healthy, so I quit cold turkey."
For no charge, Ueno will keep the device safe until the owner asks for it back.
Could be used for everything from search-and-rescue robots to wearable tech
Don't require the rare material being mined from the mountains of South America
IBM hopes that its new tool will avoid bias in artificial intelligence
Found by calculating the strength of the material deep inside the crust of neutron stars