Remix.asia ... 

http://www2.aimnet.ne.jp/nakahara/3dart/3seisak6.html
で紹介されている RDS(Random dot stereogram) Program list (N88BASIC)。

仮想ホストWindows98(SE) ＋ N88互換BASIC for Windows95(bas95110.lzh)
を準備して実行可能。1から5のキー入力で５種類 描画される。

せっかくなので、java で動作するよう必要最小限で移植。
https://github.com/remixgrjp/RandomDotStereogram.git

Webセキュリティ担当者のための脆弱性診断スタートガイド 第2版 上野宣が教える新しい情報漏えいを防ぐ技術
　WEB最低限のセキュリティの基礎知識から診断ツールの活用方法など実践的です。

Android Studio 3.4.2 で 例えば
~/AppData/Local/Android/sdk/platform-tools/adb connect 192.168.0.3
としたときのWiFi接続エラー時のメッセージが以前と異なり
missing port in specification: tcp:192.168.0.3
のようになる。仕様が変わったのか？
~/AppData/Local/Android/sdk/platform-tools/adb connect 192.168.0.3:5555
ポートを明示することで無事接続。
　それでも WiFi接続できないときは...▼

 Hello Google Play Developer,

This is a reminder that starting November 1, 2019, updates to apps and games on Google Play will be required to target Android 9 (API level 28) or higher. After this date, the Play Console will prevent you from submitting new APKs with a targetSdkVersion less than 28.

Configuring your app to target a recent API level ensures that users benefit from significant security and performance improvements, while still allowing your app to run on older Android versions (down to the minSdkVersion).

Action required

Please ensure that your apps are configured to target at least Android 9 (API level 28) by November 1, 2019. For technical advice on how to change your app's target API level to meet these requirements, refer to the migration guide.

Affected apps

The apps included below have one or more APKs—in production or testing tracks—that aren't currently targeting API level 28 or higher. Apps are listed with the maximum version code and corresponding targetSdkVersion. If you have more than 20 apps that could be affected in your account, please check the Play Console for a full list.
asia.remix.clocksignal   4   24
asia.remix.clocksignals   3   24
asia.remix.clocktalk   4   26
asia.remix.clocktalkfree   7   26
asia.remix.daydreammovie   2   23
asia.remix.dictation   2   25
asia.remix.dictationfree   3   24
asia.remix.eiken2p   1   23
asia.remix.eiken3   1   23
asia.remix.eiken4   1   23
asia.remix.eiken5   1   23
asia.remix.koumon   1   23
asia.remix.learningcard   1   23
asia.remix.metronome   2   23
asia.remix.newsreaderfree   3   26
asia.remix.orgelfree   4   24
asia.remix.rokuseicm   1   24
asia.remix.sportswatchfree   3   24
asia.remix.wakeuponlan   1   23

The Google Play Team