tatsuyafujisaki

• https://firebase.google.com/docs/cloud-messaging/manage-tokens#stale-and-expired-tokens

  • Stale registration tokens are tokens associated with inactive devices that have not connected to FCM for over a month.

  • When stale tokens reach 270 days of inactivity, FCM will consider them expired tokens.

• https://firebase.google.com/docs/cloud-messaging/manage-tokens#ensuring-registration-token-freshness

• > By default, FCM considers a token to be stale if its app instance hasn't connected for a month.

tatsuyafujisaki

How to solve the "マイナポータルアプリが起動できません" error when trying to open e-Taxソフト（SP版） on iPhone

• iPhone's Settings > Chrome > Default Browser App > Safari
• The language on iPhone does not matter. You don't have to set it to Japanese.

tatsuyafujisaki

How to toggle Dartk Mode

1. Open https://office.com
2. Create or open a document in Word.
3. Menu bar > View > Dark Mode

How to create a hanging indent by Japanese "字" in Word on office.com

1. Set the language of Google Chrome to Japanese.
2. Open https://office.com
3. Open a document in Word.
4. Click the 段落オプション icon in the lower right corner of the 段落 group on the ribbon.

tatsuyafujisaki

iOS	iOS URL	Android	Android URL
Status bars	https://developer.apple.com/design/human-interface-guidelines/status-bars	Status bar	https://developer.android.com/design/ui/mobile/guides/foundations/system-bars#status-bar
Navigation bars	https://developer.apple.com/design/human-interface-guidelines/navigation-bars	Top app bar	https://m3.material.io/components/top-app-bar
Tab bar	https://developer.apple.com/design/human-interface-guidelines/tab-bars	Navigation bar	https://m3.material.io/components/navigation-bar
n/a	n/a	System navigation bar	https://developer.android.com/design/ui/mobile/guides/foundations/system-bars#navigation-bar
Side bars	https://developer.apple.com/design/human-interface-guidelines/sidebars	Navigation drawer	https://m3.material.io/components/navigation-drawer/overview

tatsuyafujisaki

Both for Google Docs and Google Sheets

Language	Font
Chinese	Noto Sans SC
English	Arial(Default)
Japanese	Noto Sans JP

Google Docs

Menu bar > File > Page Setup > Paper size > A4

tatsuyafujisaki

https://commondatastorage.googleapis.com/gtv-videos-bucket/

Title	Thumbnail	Audio	Video
Big Buck Bunny		https://commondatastorage.googleapis.com/gtv-videos-bucket/CastVideos/dash/BigBuckBunnyAudio.mp4	https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4
Elephants Dream		https://commondatastorage.googleapis.com/gtv-videos-bucket/CastVideos/dash/ElephantsDreamAudio.mp4	https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4
Sintel		https://commondatastorage.googleapis.com/gtv-videos-bucket/CastVideos/dash/SintelAudio.mp4	https://commondatastorage.googleapis.com/gtv-videos-bucket/s

tatsuyafujisaki

.pem file

• is a base64 file that contains various cryptographic keys.
• 's private keys begin with -----BEGIN RSA PRIVATE KEY-----.
• 's public keys (TLS certificates) begin with -----BEGIN CERTIFICATE-----.

How to create a .p12 file from a private key PEM file and a public key PEM file

openssl pkcs12 -export -out output.p12 -inkey private-key.pem -in public-key.pem

tatsuyafujisaki

Virtual Device Manager

• Device skin > [None]
• Edit device > Additional settings > Default boot > Cold

Pixel 9 Android 16 (both Android physical devices & emulators) > Settings

• Security & privacy
  • Privacy controls > Ads > Delete advertising ID
  • More security & privacy > Personalize using app data > Off
• System
• Keyboard > On-screen keyboard > Google Voice Typing > Off

tatsuyafujisaki

public class Solution {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        PrintWriter pw = new PrintWriter(System.out, false /* disables autoFlush to write at once */);
        fs.close();
        pw.close();
    }

    static class FastScanner {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

tatsuyafujisaki

Google Chrome

on iPhone

Google Chrome > Settings

• (my account) > Bookmarks + Reading list + Settings
• Google Services > Disable everything except "Allow Chrome sign-in".

on macOS

Settings

URL	Action
chrome://apps	Refer to the "Apps" section below