Password Security with Hidden Characters

Ever wondered if you could make your password harder to crack without making it harder to remember? One clever method is to use hidden or invisible Unicode characters.

These invisible characters can strengthen your passwords in a subtle but powerful way — making them look normal while hiding complexity from hackers and brute-force scripts.

What Are Hidden or Invisible Characters?

Invisible characters are Unicode characters that don’t display anything visually. You can type them, but you won’t see them. Examples include:

  • U+200B – Zero Width Space
  • U+200C – Zero Width Non-Joiner
  • U+200D – Zero Width Joiner
  • U+2060 – Word Joiner

These characters appear invisible but are still part of your password.

Why Use Hidden Characters in Passwords?

Adding one or more invisible characters makes your password significantly harder to guess, even if it looks familiar on the surface.

Example:

  • Without invisible character:
    MySecurePassword123

  • With invisible character:
    My​Secure​Password123
    (It looks the same, but it contains Zero Width Spaces)

Even advanced password crackers might miss these if they’re not programmed to include Unicode.

How to Add Hidden Characters to Your Password

Step 1: Copy an Invisible Character

Go to invisible-symbol.com and click Copy on one of the invisible characters, such as:

Step 2: Paste It into Your Password

Insert it between characters or at the start/end of your password.

  • Example: Pass‎word2025
  • Still looks like: Password2025
    But is actually: Pass[U+200B]word2025

Step 3: Save It Safely

Use a password manager that supports Unicode to safely store and autofill your password.

⚠️ Some sites may strip or reject non-visible characters. Test before relying on them.

Pros and Cons

✅ Pros:

  • Adds complexity without changing appearance
  • Harder for bots to crack
  • Unique and customizable

❌ Cons:

  • Not all websites accept invisible characters
  • Harder to type manually or recover if forgotten
  • Can cause confusion if unsupported

Where Can You Use This?

  • Email accounts
  • Bank and fintech logins
  • Gaming platforms
  • Social media (if accepted)

Always test the login to ensure it works before fully switching.

Invisible doesn’t mean weak.
With the right use of hidden characters, your password becomes a silent fortress.

🛡️ Try it out now at Invisible Symbol!