Every time you log into something, something offers to remember your password. Your browser. Your iPhone. A dedicated app. Here's what the difference actually is — and which one is right for you.

And why you probably need it switched on right now.

You get a text saying your Apple account was charged £143.95.

Or your parcel is waiting.

How to spot fake emails, texts, and calls.

And why you probably need one.

How to spot it — and why it matters.