
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】
Starbucks Japan releases first-ever gacha capsule toys, featuring iconic menu items as plush coffee charms
7-Eleven Japan now offering baked-in-store pizza by the slice with two very different topping sets
Okayama man arrested for catching butterflies in central Japan
New Studio Ghibli washi tape adds anime flair to Japanese stationery
Starbucks Japan unveils new coffee drinks… for people who don’t drink coffee
Kyoto receives more foreign tourists than ever before, but fewer visitors say they’ll return
Katana of one of Japan’s most famous swordsmen goes on display to help Kumamoto earthquake victims
New service lets Tokyo tourists display their faces on giant screen at Japan’s busiest intersection
Foreign tourists in Japan eat far more rice than previously thought, according to new data
Sanrio’s newest item looks like dog butt, exactly like it’s supposed to [Photos]
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japanese Shinkansen becomes an overnight hotel for three nights this summer
Giant Evangelion Spear of Longinus to be installed at Japanese train station with Eva art trains
Face lettuce appears in Japan, with the face of Death Note’s Light Yagami, but why?
Starbucks Japan releases a miniature display rack so you can create your very own store at home
99-year-old woman rescued while attempting to climb Mt. Fuji
Pokémon Card Stores requiring facial recognition scans for entry in Japan in latest anti-scalper move
Family Mart’s new Famima flagship in Tokyo has a hidden gem that most visitors miss
Starbucks Japan unveils exclusive new Frappuccinos limited to three regional areas
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Japan now has human refrigerators inspired by Japanese vending machines
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
New Shinkansen luggage drop-off system begins in Japan, making train travel even easier
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Family Mart opens new “Famima” flagship store in Tokyo that’s like a tourist attraction
Uniqlo looks back to the very start of Pokémon with new black-and-white pixel art T-shirts[Pics]
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
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
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
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