PINs Stored in Pectorals: City Hall's 'Muscle Memory Authentication' Suspended for Being Too Intimidating

On the 6th, the Yatsuhaka City Hall’s newly introduced biometric system, “Muscle Memory Authentication,” was forced into suspension just five days after its launch. While expected to be a revolutionary attempt to solve the national challenge of forgotten PINs, the unexpected intimidation radiating from citizens’ “pectoral muscles” proved to be its downfall.

The system works by converting password numbers and symbols into contraction patterns of the pectoral muscles, which are then read by specialized cameras monitoring the rhythmic twitching. Positioned as the ultimate life hack to combat the forgetting curve, even the Japan Sports Agency had been keeping a close eye on it. “The brain may forget, but the muscles never betray you.” With this powerful declaration from the Mayor, the counter opened to a massive influx of citizens.

However, the scene was enveloped in an unforeseen intensity. To input the PIN “4649,” citizens would vigorously heave their right chest four times and their left chest six times in alternation. The counter was lined with stoic men making their chest muscles ripple through their dress shirts while maintaining a silent, piercing gaze forward, alongside elderly citizens turning bright red as they desperately tried to control their pectorals.

“I didn’t know where to look,” and “I felt terrified, as if I were being suddenly threatened,” screamed staff members handling the counter operations. Citizens with high security awareness, in particular, tended to set complex passwords, leading to prolonged input times. This resulted in a bizarre, endless spectacle resembling a bodybuilding free-posing pre-judging session. Cases of children in the waiting area bursting into tears were also reported.

Furthermore, a series of “Muscle Errors” occurred, where citizens could not log in to the system on days they suffered from muscle soreness, preventing them from obtaining residency certificates. Since the range of motion of the pectorals dictated the number of digits in a PIN, it even sparked a new social issue: a “Security Gap” between those who worked out and those who did not.

Taking the situation seriously, the city decided to completely halt pectoral-based authentication. Starting next month, they plan to resume with a specification change to the “biceps,” emphasizing a more “friendly” approach. However, whether a line of citizens silently making biceps and repeatedly striking “guts poses” at the counter will create a more peaceful scene than the pectorals remains to be seen. The city’s muscular challenge has only just finished its first pump-up.

Stakeholder Comments

• Mayor: “I learned that while muscles never betray you, they can unintentionally intimidate the people around you.”
• Counter Staff: “When an expressionless old man suddenly made his chest go ‘crunch-crunch,’ I thought he had finally transcended humanity.”
• Citizen (Bodybuilder): “I took pride in being the only one in the city who could express a 16-digit alphanumeric password using only my pectorals. I’m devastated by the suspension.”
• Citizen (Housewife): “When I practiced twitching my chest in front of the mirror every day, my husband recommended I see a doctor.”
• Security Expert: “A physical zero-trust model where password strength depends on muscle hypertrophy. It was certainly revolutionary.”
• Pectoral Muscles: “I wish they had relied on me more. Twitch.”
• Biceps: “My turn next? I’ll protect personal information to the end with these bulging peaks.”
• System Developer: “We set the sensitivity too high. Having it judged as ‘Login Attempt Over’ due to heart palpitations after running up the stairs was a point of reflection.”
• Crying Child: “There were so many gorillas.”
• Gym Instructor: “It’s a shame; our new ‘Password Pump-Up’ course for those heading to City Hall was very popular.”

International Expressions

Haiku

• Secrets told by chest
• At the public service gate
• Spring window rhythm
• Twitching pectorals
• Dancing at the City Hall
• Muscular display
• Pectoral power
• Typing out the secret code
• Sweating through the day
• Hazy spring morning
• Intimidation rising
• At the service desk
• Forgotten brain thoughts
• Entrusted to the muscles
• For the password key
• Silent ripples move
• Across the chest for papers
• Proof of residency
• Sore from the workout
• Cannot log in to the site
• Spring morning error
• Biceps waiting now
• For their turn as the main star
• Eager for the stage
• Will the fear subside?
• Flexing arms at City Hall
• Guts poses for all
• Training for safety
• Muscles as the new defense
• Modern security

Kanji / Chinese Characters

八ツ墓市役所六日 暗証番号大胸筋保存 筋肉動記憶画期的窓口 無言胸肉連続振動市民 尋常非威圧感苦情殺到 急遽上腕二頭筋仕様変更

Emoji

🏢👨‍💼💪😠➡️😨🛑📝💪😁

Onomatopoeia

Twitch, twitch… Crunch! Buzz, Shiver. Flex, Quiver. Stare, Sweat. Pump up! Snap, Stop.

SNS

• #MuscleMemoryAuthentication
• Went to city hall and saw a macho guy twitching his chest lol #Pectorals
• I can’t get my residency certificate because of muscle soreness lol
• #SecurityGap
• Forgot my password so I guess I’ll just go bench press for now.
• Biceps are next, apparently. Isn’t a city hall full of people doing guts poses also kind of crazy? 🤔
• Grandpa’s chest twitching was a master-level technique. #LifeHack
• The brain forgets, but the muscles never betray (they just intimidate).
• Security that makes kids cry? That’s the strongest kind in a way.
• The era of protecting personal data with muscles is finally here. #MusclesNeverBetrayYou