pasuwaadokanriapuri de pasuwaado no tsukaimawshi o sakeru.

I avoid password reuse with a password-manager app.

Breakdown of pasuwaadokanriapuri de pasuwaado no tsukaimawshi o sakeru.

• を: direct object particle
• で: means particle
• 避さける: to avoid

Questions & Answers about pasuwaadokanriapuri de pasuwaado no tsukaimawshi o sakeru.

What does パスワード管理アプリ mean as a single chunk?

It is a compound noun made of three parts:

• パスワード = password
• 管理 = management
• アプリ = app

So パスワード管理アプリ means a password management app or more naturally a password manager app.

Japanese often stacks nouns together like this without extra words such as for, of, or that manages.

Why is で used after パスワード管理アプリ?

Here, で shows the means/tool/method used to do something.

So:

• パスワード管理アプリで = with a password manager app / by using a password manager app

It tells you how the action is carried out.

Compare:

• 箸で食べる = eat with chopsticks
• アプリで管理する = manage something with an app

In this sentence, the idea is that the app is the tool used to help avoid password reuse.

What is 使い回し and how should I understand it?