Encryption.

Most people find it difficult to understand modern encryption. That becomes a problem when they rely on it daily without realizing it.

Passwords are an easy example. Every login, stored credential, and autofill depends on encryption working properly behind the scenes, even if the user never sees it.

Managing passwords yourself often leads to reuse, which defeats their purpose, and when done correctly, this creates a memory challenge. Using a password manager like iCloud Passwords or 1Password adds a single point of failure but also reduces the overall attack surface.

Passkeys take this a step further by replacing passwords with device-specific cryptographic keys tied to biometrics, reducing both reuse and exposure.