If you have more than a dozen friends on Facebook, odds are pretty good that at least one of them has started tagging every person on Earth with suspiciously misspelled advertisements for knockoff Ray-Ban sunglasses. Facebook would really prefer that this not happen, or at least not happen quite so often. To that end the company introduced the Security Checkup feature to the web version of the social network, and now it's available on Android as well. Maybe.

Security Checkup does a few things. First, it examines your password and suggests changing it if it's not strong enough. Second, it sends you alerts if someone logs in to your Facebook account from an unfamiliar or suspicious location.

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