Password Managers Explained: How They Work and How to Start Using One

A password manager lets you use a different strong password for every account while remembering only one. Here is how it works, why it is safer, and how to set one up in an afternoon.

By Trends Editorial

Revised First published 4 min read

In brief

What a password manager does, whether it is safe, how to choose one, how to set it up step by step, and how passkeys and two-step verification fit in.

The problem a password manager solves

Most people reuse a handful of passwords, because remembering a different strong password for every account is impossible. That is exactly what attackers rely on. When one website is breached, criminals try the leaked email and password on email, banking and social media accounts. This is called credential stuffing, and it is one of the most common ways accounts are taken over.

A password manager fixes this. It creates a long, random, unique password for every account, stores them in an encrypted vault, and fills them in for you. You only need to remember one strong master password, or unlock it with your face or fingerprint.

How it keeps your passwords safe

Reputable password managers use end-to-end encryption. Your vault is encrypted on your own device using a key derived from your master password, before it is synced. The company stores only the scrambled version and cannot read your passwords, so a breach of its servers does not hand attackers your passwords in usable form.

Password managers also protect you from fake websites. A manager fills in a password only on the exact site it was saved for. If it does not offer to fill on a page that looks like your bank, that is a warning sign. See our guide to spotting phishing.

Choosing one

There are two broad options:

Built-in managers, already on your devices:

  • Apple Passwords, on iPhone, iPad and Mac, with a Windows option through iCloud
  • Google Password Manager, in Chrome and on Android
  • Browser managers in Microsoft Edge and Firefox

These are free, simple and good enough for many people, especially if you use one ecosystem.

Standalone managers, such as Bitwarden, 1Password, Proton Pass and Dashlane, are worth considering if you:

  • use a mix of devices and browsers, such as an iPhone and a Windows laptop
  • want to share passwords securely with family or colleagues
  • want extra features like secure notes, file storage or advanced breach alerts

When comparing, look for end-to-end encryption, support for all your devices, two-step verification on the account, independent security audits and passkey support.

How to set one up, step by step

  1. Choose your manager and install it on your phone and computer, including the browser extension.
  2. Create a strong master password. Use a passphrase of four or more random words, such as candle-river-orbit-saffron, rather than a short complex password. Never use it anywhere else.
  3. Turn on two-step verification for the password manager account.
  4. Save your recovery code or set up account recovery, and keep it somewhere safe offline.
  5. Import passwords saved in your browser, then delete them from the browser if you are switching to a standalone manager.
  6. Change your most important passwords first: your main email, your Apple or Google account, banking and payment apps, and social media. Let the manager generate a new, unique password for each.
  7. Update other accounts as you log in. You do not have to do everything at once. Over a few weeks your vault will cover everything.

Passkeys: the next step

A passkey replaces a password with a cryptographic key stored on your device, unlocked with your fingerprint, face or PIN. Passkeys cannot be phished or reused, and there is nothing to remember. Google, Apple, Microsoft, Amazon, PayPal, WhatsApp and many other services support them.

Where a site offers a passkey, it is usually worth creating one. Your password manager or device will store and sync it.

Two-step verification still matters

Even with strong passwords, turn on two-step verification (2FA) for important accounts. In order of strength:

  1. Passkeys or a hardware security key, the strongest
  2. An authenticator app, such as Google Authenticator, Microsoft Authenticator or the one built into your password manager
  3. SMS codes, better than nothing but vulnerable to SIM-swap attacks

Common mistakes to avoid

  • Using a weak or reused master password
  • Not setting up recovery, then getting locked out
  • Keeping passwords in notes apps, spreadsheets or photos
  • Ignoring the manager's warnings about reused or leaked passwords
  • Sharing passwords over WhatsApp or email instead of the manager's secure sharing

If you think an account has already been compromised, follow our steps for what to do if your phone is hacked.

Questions readers ask

Is it safe to keep all my passwords in one place?

For almost everyone it is far safer than the alternative, which is usually reusing a few passwords. Reputable password managers encrypt your vault on your device with your master password, so the company cannot read it. The main risk is a weak master password, so make that long and unique and protect the account with two-step verification.

What happens if I forget my master password?

With many password managers the company cannot recover it, because only you hold the key. Set up the recovery options when you create the account, such as a recovery code, emergency contact or account recovery through your device, and store any recovery code somewhere safe offline.

Is the password manager built into my phone or browser good enough?

For many people, yes. Apple Passwords, Google Password Manager and the managers built into major browsers now generate strong passwords, sync across devices and warn about leaked or reused passwords. Standalone managers add features such as wider cross-platform support, secure sharing and better organisation.

Do I still need a password manager if I use passkeys?

Yes, for now. Passkeys are replacing passwords on more sites, but most people still have dozens of accounts that use passwords. Password managers also store and sync passkeys, so they handle both.

Filed under

Found this useful? Pass it on.

Written by

Trends Editorial

A small editorial desk focused on practical, well-structured information that helps readers make confident decisions.

How we research and revise our stories

More from Technology and nearby subjects