# Inverting conditions in Locksmith
There are many instances in which it is useful for a key to grant access if the *opposite* of your key condition is true.
Locksmith makes it easy to invert keys. To do so, simply click the box next to "invert" when you're editing the key:
Notice that when this is done, the wording will update, inverting the key condition logic:
Make sure to "Save" the lock, and you're done!
As always, **feel free to contact us via email** at .
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**A note on inverted customer account keys**
When you invert a [customer account key condition](https://www.locksmith.guide/keys/customer-account-keys) — such as "is tagged with," "has purchased," or "email contains" — the inverted key will also grant access to visitors who are **not** signed in, since they technically meet the inverted condition — they have no customer account details (tags, email, purchase history, etc.) associated with them.
If you want to require sign-in, combine the inverted condition with an "is signed in" condition inside the same key:
[Combining key conditions](https://www.locksmith.guide/keys/more/combining-key-conditions)
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