The golden rule of password hints
A hint should trigger a memory only you have, never encode the password itself. "First pet's name" is not a hint — it's a security question with a guessable answer. "The thing Dad said when the grill caught fire, 2019" is a hint: meaningless to a stranger, unforgettable to you. The test is simple: if someone read your hint, could they narrow down the password? If yes, rewrite it.
Memory technique 1: the private story
Humans remember stories, not strings. Build your password from a personal story, then make the hint point at the story — never at the password:
- Password from: the summer the lake house roof leaked onto the piano
- Bad hint: "lake house piano" (too close to the password's words)
- Good hint: "the summer of the indoor waterfall" (triggers the memory, reveals nothing)
The hint works because it activates your autobiographical memory. Nobody else was there.
Memory technique 2: the sensory anchor
Memories tied to senses are stickier than abstract ones. Anchor the hint to something you saw, heard or smelled:
- "Smell of the old library basement"
- "The song from the road trip argument"
- "What the kitchen looked like after the flour incident"
Sensory hints are naturally hard to guess — an attacker can't derive your password from "flour incident" — and they're naturally easy for you to recall, because sensory memories persist.
Memory technique 3: the rule reminder
Sometimes the hint shouldn't point at content at all, but at the method you used. If your passwords follow a personal system — say, a phrase plus a site-specific word — the hint can name the system:
- "Usual phrase + the blue one" (if your system pairs a base phrase with a per-site word)
- "Book method, page noted in journal"
This technique pairs best with a password manager, where the hint only needs to get you to the right entry rather than reconstruct the password from memory.
What never belongs in a hint
| Don't write | Why |
|---|---|
| Any part of the actual password | The hint becomes a partial password leak |
| Birthdays, names, addresses | Guessable from public records and social media |
| "Password123" style patterns described literally | Describing the pattern reveals the pattern |
| The site or service name as the whole hint | Helps nobody remember anything |
| Something only true "right now" | "The dog's name" fails when the dog is gone; hints must be time-stable |
Where hints live (and the real advice)
Honest guidance: the most secure approach is a password manager, where you don't need memorable passwords at all. Hints matter most for the two or three passwords you truly must memorize — typically your device passcode and your password manager's master password. For those, use the techniques above; for everything else, let the manager remember and use long random passwords.
Never store hints in the same place as passwords, never email yourself hints, and treat a hint with the same care as a password — because to someone who knows you well, a hint is halfway to the password.
Frequently asked questions
Are password hints safe to use at all?
They're a tradeoff. A well-written hint (private memory, reveals nothing) is reasonably safe; a poorly written one is a vulnerability. The safest setup minimizes how many passwords need hints at all — that's what password managers are for.
What makes a hint "too vague"?
If you can't reconstruct the password from it after a month without using it, it's too vague. Test hints the way you'd test anything: write one, ignore it for two weeks, then see if it still works.
Should hints be different for every account?
The hints can follow the same technique, but each should point to a distinct memory. Reusing one hint across accounts is only acceptable if each account also has a unique password — which a password manager handles.
Can I use a hint instead of writing the password down?
A hint is not a backup. If you might truly forget, store the password in a password manager or another secure method — a hint you can't decode is the same as no password at all. And when the worst happens, a lost password with no hint to save it, here is what to do about lost recovery codes.
What about biometric login — do I still need hints?
Biometrics unlock the device, but you'll still need the underlying password when biometrics fail or for new devices. Keep hints for those fallback passwords.
Need a starting point for a memorable-but-safe hint? HintHarbor generates password hint ideas in your browser — use them as raw material, then rewrite with your own private memories before using.