Clever codger shows he still has a strong memory and a sharp mind.
As in many countries, there’s a preconception in Japan that senior citizens are easy marks for thieves, con men, and dishonest types in general. Because of that, an acquaintance of Japanese Twitter user @yuk0117 was understandably worried when he noticed a conspicuous memo that his own grandfather kept in his wallet.
Jotted down on the slip of paper was the grandfather’s ATM card PIN. The friend quickly voiced his concern that this would give anyone who stole the wallet unlimited access to his grandfather’s bank account, but it turned out there was a wily method to the elderly madness. As quoted by @yuk0117, if thieves end up with Grandpa’s wallet, he wants them to see the number.
知人の爺がクレカ入り財布を落とした
— ゆき(みっと) (@yuk0117) August 27, 2016
→財布の中には暗証番号メモもいれてある
→やばいじゃん!?
→爺「問題ない。暗証番号は5つ記してある」
→?
→爺「そしてその全てはダミーだ」
→!?
→爺「ATMでそのダミー全て試すとロックされて銀行から俺に連絡がくる」
→そして実際連絡きた
“It’s no problem if they see it. I’ve actually got five PINs written on the memo, and they’re all fakes. If you try them all at the ATM, it locks the card, and lets the bank know to contact me.”
Apparently this works in more than just theory, too. While he withholds the specific details, @yuk0117 goes on to say that at some point someone did try to use Gramp’s credit card without his permission, and the plan worked like a charm, with the bank freezing his account so that the would-be thieves couldn’t get into it.
The tweet quickly earned respecting applause from @ yuk0117’s followers. Some pointed out, though, that the story is extremely similar to one that made the rounds of the Japanese Internet roughly two years ago. Whether @yuk0117’s acquaintance is the grandchild of the senior citizen who people were talking about at that time or his grandfather the stories and decided to adopt the same tactics is unknown, but in any case, it’s a reminder that sometimes it’s not just wisdom that comes with age, but cunning too.
Source: Buzzmag
Casey doesn’t have any clever anti-theft measure in his wallet, so if find it, please let him know on Twitter.

The most unusual ATM in Japan? Banking with yokai spirits who want to know your PIN
Japan’s new ATMs automatically play anti-fraud videos to people talking on mobile phones【Video】
Breakup story has perfect response to Japanese women who treat their boyfriend like an ATM
Let’s get some cash from Japan’s sexy anime men ATMs【Photos, video】
Japanese vending machine sells freshly squeezed lemon juice with a futuristic light show
7-Eleven Japan adds new chocolate fruit gummies to its sweets range, but are they worth the hype?
Japan’s favorite popsicles add multilingual packaging to better connect with foreign tourists
Studio Ghibli’s No Face twirls to sound of Spirited Away’s theme song in beautiful accessory box
Air-conditioned dress shirts arrive in Japan to save working professionals from sweltering heat
7-Eleven Japan rethinks convenience store sandwiches with a wild new choc-mint variety
Sweet dreams are made of cheese at this all-you-can-eat cheese and doria restaurant
Pokémon comes to McDonald’s Japan for new Happy Meals toys, brings every generation’s starters
Tokyo’s newest viral dessert is like a Japanese parfait inside a bread bun [Taste test]
Coco’s Japan is very confident in their chilled ramen, but should they be? [Taste test]
Starbucks Japan releases first-ever gacha capsule toys, featuring iconic menu items as plush coffee charms
Kyoto receives more foreign tourists than ever before, but fewer visitors say they’ll return
7-Eleven Japan now offering baked-in-store pizza by the slice with two very different topping sets
Starbucks Japan opens new store inside historic seaside quarantine station near Tokyo
Foreign tourists in Japan eat far more rice than previously thought, according to new data
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
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
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]
Japanese Shinkansen becomes an overnight hotel for three nights this summer
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
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】