
Self-controlled robo guard scans for dangerous individuals and suspicious packages, would probably look adorable with a police officer’s uniform.
The morning started off like any other. We got up, hopped on the train to go to SoraNews24 headquarters, and when we got off at Seibu Shinjuku Station, at first nothing looked out of the ordinary.
But the station sounded different. No, it wasn’t filled with the squeals of adoring fangirls swooning over posters of our ace reporter Mr. Sato (those were only up at Seibu Ikebukuro Station). Instead, mixed in with the murmurs and footsteps of our fellow commuters we could hear a clear yet mechanical voice repeatedly saying “Security patrol in progress. Security patrol in progress.”
And then we saw this.
Japan is the cosplay capital of the world, and at first we thought this might be an overzealous costumer who just couldn’t wait until next month’s winter Comiket to show off his outfit. It turns out, though, that that’s an honest-to-goodness security robot patrolling one of Tokyo’s most important rail hubs.
This isn’t a remote-controlled land drone, either. The Perseusbot, as it’s officially called, moves autonomously, thanks to technology jointly developed by Seibu Railway, the Tokyo Metropolitan Industrial Technology Research Institute, and Japanese artificial intelligence firms Earth Eyes and Nihon Unisys. As it patrols its territory, the Perseusbot scans the area with its onboard camera and also analyzes images sent to it by the facility’s preexisting installed security cameras, searching for humans moving aggressively or dangerously as well as suspicious unattended packages.
▼ The Perseusbot has a bit of a paunch, which makes us wonder if it also scans for snacks.
However, while the security robot is capable of detecting problems on its own, it leaves threat response up to flesh-and-blood colleagues. When it spots someone or something dangerous, it sends a notification to the facility’s human security staff, so there’s no need to worry about it shooting death rays or shocking you with a stun baton if you look at it cockeyed.
▼ Seeing it standing guard in front of a Starbucks sign has us wondering if, unlike carbon-based law-enforcement officers in Japan, the Perseusbot is allowed to consume beverages while on duty.
The robot is still undergoing field testing, so that the developers can gauge its capabilities and also the effect it has on pedestrian traffic flow. Since its systems aren’t completely finalized yet, when we came across the Perseusbot it was being followed by a group of researchers.
▼ Making it look like it’s got its own celebrity entourage
The Seibu Shinjuku Station test run ended on November 30, but given the rail operator’s involvement in the project, it’s probably only a matter of time until we run into one again. Hopefully it’ll be more understanding of our writers’ periodically bizarre appearance than the human Tokyo cops.
Reference: Seibu Railway, Asahi Shimbun
Photos ©SoraNews24
[ Read in Japanese ]
Follow Casey on Twitter, where, on second thought, he thinks it would be best to dress the Perseusbot is a penguin costume.








Robot security guards patrol Tokyo Metropolitan Government Building
Japan Railways wants to build a team of robots to help travelers, catch criminals in its stations
This handsome anime-style security guard will be protecting actual homes and offices in Japan
Skynet sends a Terminator to Tokyo’s Shinjuku Station to future-freak-out commuters【Photos】
Robot noodle chef starts working in Tokyo train station, serves up taste of the future【Video】
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
Japanese bento shop touches hearts by selling super cheap boxed lunches for around a dollar
Tokyo’s life-size Gundam is getting a new look before its end-of-summer removal
Japan’s Pokémon Slowpoke Train goes on hiatus, but a mini version could be yours to own
Reinvented traditional Japanese hearths may be coming to a restaurant near you
Abandoned pirate pleasure ship sinking south of Tokyo Bay, city orders destruction
These rare eggs cost more than a typical meal in Japan but are they really that special?
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
When is miso ramen not miso ramen? When it’s the new ramen at one of Japan’s top beef bowl chains
East Japan Railway announces plans to abolish magnetic-strip tickets
New Square Enix Cafe reveals Final Fantasy, Dragon Quest, Nier, and Fullmetal Alchemist menu items
Universal Studios Japan is giving Frieren anime fans the chance to make unforgettable memories.
Japan’s cheap beef bowl chain goes upscale with Matsuya Premium, but is it worth the higher price?
Family Mart commits “reverse fraud” in new Giant All-Star Festival, and we couldn’t be happier
7-Eleven Japan joins the craze for Korean Gamja Cheese Balls
Shakey’s Japan creates matcha mochi, Kyoto fish, and Kansai Chili Con Carne pizzas
Anne Hathaway creates PR frenzy in Japan after mentioning Tottori in Devil Wears Prada interview
7-Eleven Japan has a new Creamy Iced Cafe Latte that’s a hit on social media
Kanji ice cream becomes a sell-out hit in Japan
Uniqlo reveals third round of massive 100-year-anniversary manga T-shirts for Jump’s Shueisha
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
New official Ghibli anime food cookbook will teach you how to make Ponyo’s ramen and more
Japanese convenience store Lawson launches new “mini supermarket” chain, L Minimart
Japan’s real-world Pokémon hot spring’s first photos are here![Photos]
Kyoto public junior high school becomes first in Japan with a hoodie school uniform
Japanese convenience store shows us how to dress for the rainy season
Starbucks Japan unveils new Frappuccino showcasing “mottainai” culture
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Tokyo Station’s new guidance robot is extremely terrifying, pretty helpful【Video】
Japan Railways now has giant robots performing maintenance work via VR-goggled operators
Tokyo’s fried-chicken cooking robot is here, and here’s a guide to help you use it【Photos】
Tokyo train station’s free luggage storage terminals will keep your stuff safe as you take a dump
From Tokyo to Hokkaido for under 50 bucks in train tickets–Part 2 of our Japanese rail voyage
Japan goes from capsule hotels to capsule offices with free Wi-Fi, device charging in Tokyo
Anime star Captain Tsubasa takes over Tokyo train station, turns ticket gate into soccer field