Japanese Turn to Wearable Tech to Beat the Heat

The wearable tech jackets are designed to be worn with battery-powered fans (R), which are sold separately, inside the lining to keep the user cool in the summer heat. Richard A. Brooks / AFP
The wearable tech jackets are designed to be worn with battery-powered fans (R), which are sold separately, inside the lining to keep the user cool in the summer heat. Richard A. Brooks / AFP
TT

Japanese Turn to Wearable Tech to Beat the Heat

The wearable tech jackets are designed to be worn with battery-powered fans (R), which are sold separately, inside the lining to keep the user cool in the summer heat. Richard A. Brooks / AFP
The wearable tech jackets are designed to be worn with battery-powered fans (R), which are sold separately, inside the lining to keep the user cool in the summer heat. Richard A. Brooks / AFP

Selling jackets with built-in fans, neck coolers and T-shirts that feel cold, Japanese firms are tapping into a growing market for products to help people handle the summer heat.

Japan -- like other countries -- is seeing ever-hotter summers. This July was the warmest in 100 years, with at least 53 people dying of heatstroke and almost 50,000 needing emergency medical attention, AFP said.

Workman, which makes clothes for construction workers, launched a version of their fan-fitted jackets adapted for the high street in 2020 as demand grew.

The mechanism is simple -- two electric, palm-sized fans powered by a rechargeable battery are fitted into the back of the jacket.

They draw in air to then deliver a breeze -- at variable speeds -- onto the wearer's body.

The jackets retail for 12,000 to 24,000 yen ($82-164).

"As the weather gets hotter, people who have never worn fan-equipped clothing before want to find ways to cool down... so more people are interested in buying it," Workman spokesman Yuya Suzuki told AFP.

"Just like you feel cool when you are at home with a fan, you feel cool just by wearing (the jacket) because the wind is blowing through your body all the time," he said.

Ageing population at risk

Japanese summers are known to be hot and humid, but this July Tokyo really sweated.

The average temperature was 28.7 Celsius (83.7 Fahrenheit), the highest on record since 1875.

Heatstroke is particularly deadly in Japan, which has the second-oldest population in the world after Monaco.

More than 80 percent of heat-related deaths in the past five years have been among senior citizens.

"Some people die from heatstroke," said Nozomi Takai of MI Creations, a company selling neck-cooling tubes mainly to factory and warehouse workers.

"Individuals as well as companies are putting more and more effort into measures against it every year," Takai said.

The gel inside his firm's brightly colored tubes -- priced at 2,500 yen -- is cool enough to use after 20 minutes in the fridge.

Wearing it on the neck will "considerably cool the whole body" for about an hour, she said.

Takai's company joined an expo this year on "measures against extreme heat" in Tokyo to showcase new products that help users stay cool in the scorching heat.

At another booth, Tokyo-based company Liberta had a series of clothing including T-shirts and arm sleeves using prints that make users feel cool -- especially when they sweat.

The prints use materials such as xylitol that feel cool when reacting with water and sweat, they said.

Chikuma, an Osaka-based company, has even created office jackets and dresses equipped with electric fans.

"We developed them with the idea that it could be proposed in places where casual wear is not allowed," Yosuke Yamanaka of Chikuma said.

Regular fan-fitted clothes can make the wearer look puffy, as they need to be zipped up, and cuffs are tight.

But jackets developed jointly by Chikuma, power tool maker Makita and textile giant Teijin do not need to be buttoned up, thanks to a special structure that sandwiches the fans in two layers and keeps the cool air in, Yamanaka said.

Men adopting parasols

Parasols, which are commonly associated in Japan with skin-tone-conscious women protecting against a summer tan, are now proving more popular with men too.

Komiyama Shoten, a small, luxury umbrella maker in Tokyo, began making parasols for men around 2019 after the environment ministry encouraged people to use them.

Before, many male customers thought parasols "were for women and they were embarrassed", the owner Hiroyuki Komiya said.

"Once you use it, you can't let go," he added.

On the busy streets of popular tourist destination Asakusa, Kiyoshi Miya, 42, said he decided to "use his umbrella as a parasol".

"It's like I'm always in the shade and the wind feels cool," he said.

Another visitor, Shoma Kawashima, wore a wearable fan around his neck to stay cool under the blazing sun.

"It's so hot I want to be naked," the 21-year-old said.

Gadgets are helpful, but "not a solution" to rising temperatures, he added.



Can AI Make Video Games More Immersive? Some Studios Turn to AI-Fueled NPCs for More Interaction

The AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration taken, June 23, 2023. (Reuters)
The AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration taken, June 23, 2023. (Reuters)
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Can AI Make Video Games More Immersive? Some Studios Turn to AI-Fueled NPCs for More Interaction

The AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration taken, June 23, 2023. (Reuters)
The AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration taken, June 23, 2023. (Reuters)

For decades, video games have relied on scripted, stilted interactions with non-player characters to help shepherd gamers in their journeys. But as artificial intelligence technology improves, game studios are experimenting with generative AI to help build environments, assist game writers in crafting NPC dialogue and lend video games the improvisational spontaneity once reserved for table-top role-playing games.

In the multiplayer game “Retail Mage,” players help run a magical furniture store and assist customers in hopes of earning a five-star review. As a salesperson — and wizard — they can pick up and examine items or tell the system what they'd like to do with a product, such as deconstruct chairs for parts or tear a page from a book to write a note to a shopper.

A player’s interactions with the shop and NPCs around them — from gameplay mechanics to content and dialogue creation — are fueled by AI rather than a predetermined script to create more options for chatting and using objects in the shop.

“We believe generative AI can unlock a new kind of gameplay where the world is more responsive and more able to meet players at their creativity and the things that they come up with and the stories they want to tell inside a fantasy setting that we create for them,” said Michael Yichao, cofounder of Jam & Tea Studios, which created “Retail Mage.”

The typical NPC experience often leaves something to be desired. Pre-scripted interactions with someone meant to pass along a quest typically come with a handful of chatting options that lead to the same conclusion: players get the information they need and continue on. Game developers and AI companies say that by using generative AI tech, they aim to create a richer experience that allows for more nuanced relationships with the people and worlds that designers build.

Generative AI could also provide more opportunities for players to go off-script and create their own stories if designers can craft environments that feel more alive and can react to players' choices in real-time.

Tech companies continue to develop AI for games, even as developers debate how, and whether, they’ll use AI in their products. Nvidia created its ACE technologies to bring so-called “digital humans” to life with generative AI. Inworld AI provides developers with a platform for generative NPC behavior and dialogue. Gaming company Ubisoft said last year that it uses Ghostwriter, an in-house AI tool, to help write some NPC dialogue without replacing the video game writer.

A report released by the Game Developers Conference in January found that nearly half of developers surveyed said generative AI tools are currently being used in their workplace, with 31% saying they personally use those tools. Developers at indie studios were most likely to use generative AI, with 37% reporting using the tech.

Still, roughly four out of five developers said they worry about the ethical use of AI. Carl Kwoh, Jam & Tea's CEO, said AI should be used responsibly alongside creators to elevate stories — not to replace them.

“That’s always been the goal: How can we use this tool to create an experience that makes players more connected to each other?” said Kwoh, who is also one of the company’s founders. “They can tell stories that they couldn’t tell before.”

Using AI to provide NPCs with endless things to say is “definitely a perk,” Yichao said, but "content without meaning is just endless noise." That's why Jam & Tea uses AI — through Google's Gemma 2 and their own servers in Amazon — to give NPCs the ability to do more than respond, he said. They can look for objects as they’re shopping or respond to other NPCs to add “more life and reactivity than a typically scripted encounter.”

“I’ve watched players turn our shopping experience into a bit of a dating sim as they flirt with customers and then NPCs come up with very realistic responses,” he said. “It’s been really fun to see the game react dynamically to what players bring to the table.”

Demonstrating a conversation with an NPC in the game “Mecha BREAK,” in which players battle war machines, Ike Nnole said that Nvidia has made its AI “humans” respond faster than they previously could by using small language models. Using Nvidia's AI, players can interact with the mechanic, Martel, by asking her to do things like customize the color of a mech machine.

“Typically, a gamer would go through menus to do all this,” Nnole, a senior product marketing manager at Nvidia said. “Now it could be a much more interactive, much quicker experience.”

Artificial Agency, a Canadian AI company, built an engine that allows developers to bring AI into any part of their game — not only NPCs, but also companions and “overseer agents” that can steer a player towards content they’re missing. The AI can also create tutorials to teach players a skill that they are missing so they can have more fun in-game, the company said.

“One way we like to put it is putting a game designer on the shoulder of everyone as they’re playing the game,” said Alex Kearney, cofounder of Artificial Agency. The company’s AI engine can be integrated at any stage of the game development cycle, she said.

Brian Tanner, Artificial Agency's CEO, said scripting every possible outcome of a game can be tedious and difficult to test. Their system allows designers to act more like directors, he said, by telling characters more about their motivation and background.

"These characters can improvise on the spot depending on what’s actually happening in the game,” Tanner said.

It's easy to run into a game's guardrails, Tanner said, where NPCs keep repeating the same phrase regardless of how players interact with them. But as AI continues to evolve, that will change, he added.

“It is truly going to feel like the world’s alive and like everything really reacts to exactly what’s happening," he said. “That’s going to add tremendous realism.”