うさ

食べる・しゃべる・買う・聴くのが好きです。白黒好き。マッサージセラピーをしているアロマセラピスト。アロマテラピー関連は呟きません。道民（仮）。TTREとファイターズを絶賛応援中。前十字靭帯 断裂再建経験者。

[うさ @usachannel]

@tcg_misae 巻いた方が傷みにくいよ、きっと。✨

[うさ @usachannel]

@tcg_misae 布団巻きのジローって何かと思ったら、布団のコインランドリーだったのね😆 初めて知ったよ！

[Millie Marconi @MillieMarconnni]

A Japanese engineer invented the QR code for one job, tracking car parts on a Toyota line, then his company chose to give the patent away for free, which is the only reason it ended up on every restaurant table on Earth.

His name is Masahiro Hara. The company was Denso Wave, a parts supplier owned by Toyota.

In 1992 the problem landed on his desk, and it was not glamorous. Workers on the factory floor were drowning.

Every car part had a barcode, but a barcode can only hold about twenty characters, so to track one component they had to stick five or ten barcodes on it.

A worker would stand there scanning a single part ten times in a row. Some of them were scanning close to a thousand barcodes a day. The job had stopped being about building cars and turned into pointing a scanner at stickers all day long.

And there was a second problem nobody upstairs cared about. This was a factory. Oil got on everything. A smudge of grease across a barcode and the whole thing became unreadable, and the line stopped.

Hara was asked to make the scanner faster. He looked at it for a while and realized the scanner was not the problem. The barcode itself was the ceiling. A line of black bars can only hold information going one direction, left to right.

He decided to build something that held information in two directions, up and down as well as across, so it could store hundreds of times more in the same little square.

Then came the part that sounds made up but is not.

Hara played Go on his lunch breaks, the old board game with black and white stones sitting on a grid. He was staring at the board one day and it clicked.

The grid of black and white stones was already a way to store information in two directions. That was the shape of his code.

But building the code was the easy half. The hard problem was speed, because the whole point was to be fast, and a scanner wastes most of its time just trying to figure out where the code is and which way it is turned.

The fix came to him on a train. He was looking out the window at buildings, and one building stood out from all the others because of its shape against the sky. That was the idea.

He put three little square targets in three corners of the code. The moment a scanner sees those three squares, it knows instantly where the code is and how it is rotated, even upside down, even at an angle.

Now here is the detail that shows how far he was willing to go. Those three corner squares only work if nothing else on the page looks like them.

If a magazine ad or a cardboard box happened to have the same black and white pattern nearby, the scanner would get confused and grab the wrong thing.

So Hara and his tiny two-person team went and surveyed printed material. Magazines. Flyers. Cardboard boxes. Piles of it, for days, reducing every picture down to its ratio of black to white area, hunting for the one ratio that almost never shows up in print anywhere. They found it. One to one to three to one to one.

That exact rhythm of black and white is baked into every corner square of every QR code on Earth, and it is there because it is the pattern the printed world almost never produces by accident.

Then he solved the oil.

He built the code so it carries a backup of its own information, spread mathematically across the whole square. You can tear off, smudge, or scratch out up to thirty percent of a QR code and it still scans perfectly, because the code rebuilds the missing piece from the copy it kept of itself.

A worker could get grease on a third of the label and the line would keep moving. This is the same math that lets a scratched CD still play and lets a spacecraft send data back across the solar system without asking to repeat itself.

He finished in 1994. He named it Quick Response, after what it does for the person using it, not after what it is.

And then Denso made the decision that actually mattered.

They held the patent. They could have charged a fee on every single scan, and given how many billions happen now, that would have made someone unimaginably rich.

Instead they announced they would not enforce their rights to collect royalties, and they published the specification openly so anyone could use it. Hara later said it was not even a big argument inside the company.

That one choice is the whole story. A code that costs nothing to use is a code everyone builds on. Airlines put it on tickets. Phone makers built readers into cameras.

Then a pandemic hit and the world needed a way to hand someone information without touching anything, and the free little square that a Toyota engineer built for greasy factory workers was suddenly on every menu, every payment, every door.

Hara still works there. He has said, more than once, that he never imagined it would spread this far, and that the part he is proudest of is that it got used to keep people safe.

The man built it to survive oil on a factory floor. It ended up surviving everything else too.

You have scanned his work a hundred times this year. Now you know whose it was.

[うさ @usachannel]

@matudon23 私も昨日初めて食べたー！

[Bloomberg @business]

Japan’s first female prime minister helped ensure that women will continue to be barred from ascending to the Imperial throne https://t.co/xC58Imi3HH

[うさ @usachannel]

DMじゃなくてリプライでもOKです！

[うさ @usachannel]

HISツアー岡山公演、仕事の都合で行けなくなってしまいました˚‧º·(˚ ˃̣̣̥⌓˂̣̣̥ )‧º·˚
どなたか行ける方にお譲りします。チケ番は10番台です。ご興味ある方、DMにてご連絡ください！　#TTREライブ

[Los Angeles Dodgers @Dodgers]

If the guys get stuck in the woods, who are they calling? 😂

[小池 @Dekopin_Koike]

「森で迷った(遭難した)時電話したくないのは誰？」
日本人全員選ばれてて草

パヘス
「朗希。だって返事来ないもん」

由伸
「翔平。たぶん今は子供に夢中で連絡返って来ない」

フリーマン
「由伸。あいつ絶対火とか起こせないしディオールの服全身に纏って森でもカッコつけてるよ」

由伸草過ぎて森

[うさ @usachannel]

ポーの一族、また読みたいな。

[Fashion Press @fashionpressnet]

“少女漫画界の巨匠”萩尾望都×山岸凉子×大和和紀の展覧会、国立新美術館で - 原画800点以上を展示 - https://t.co/NYHGfmYhY9

[西武渋谷店 @Art_meets_Life]

＃シブヤノオモイデ写真展
■8月31日(月)まで
■B館1階＝プロモーションスペース
1968年の開店から現在までの歴史などを振り返る写真展を開催✨
西武渋谷店公式X（旧Twitter）のアカウントでも「＃シブヤノオモイデ キャンペーン」を同時開催中！

くわしくは👉 https://t.co/pjPSuMaBL9

[小言をいう猫 @hashittemiyou]

そんな言葉捨ててこい。

[うさ @usachannel]

@reo_tsuchiya おっと…。

[R E P L I C A N T @Roybattyforever]

Cuando el bolso de tu mujer te pide que captures a Han Solo.

[京都芸術大学 @kua_pr]

単位が落ちてました。

お心当たりのある方は至急結び直しに行ってください。

[동공이약사 @donggong_yak]

몸이 보내는 신호를 무시하지 마세요.
1. 짠 국물이 먹고 싶다 - 배고프다
2. 살코기가 먹고 싶다 - 배고프다
3. 달콤한 크림이 먹고 싶다 - 배고프다
4. 시원한 스무디 음료가 먹고 싶다 - 배고프다
5. 기름진 생선회가 먹고 싶다 - 배고프다

[うさ @usachannel]

昨日はメチャ楽しくて、そしてなんだか感慨深いような、もちろん胸熱のLIVEでした。引き寄せ合うってこういう事かと思ったり…。もう次回が楽しみ！#極礼央炎

[うさ @usachannel]

@matudon23 えらーい👏

[うさ @usachannel]

Vol.1って事は、Vol.2もあるってことか！#極礼央炎