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>The easiest way to password protect it? Use your email address as the "password."

yeah that would be cool. You open YOUR page and it asks for your email id. So you need to know the username (assuming that's what u make url from) and the email id. Simle two factor auth without annoying sign ups

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This is not two-factor authentication. It is important to know what it means. From https://en.wikipedia.org/wiki/Multi-factor_authentication factors are:

* Something only the user knows (e.g., password, PIN, pattern);

* Something only the user has (e.g., ATM card, smart card, mobile phone); and

* Something only the user is (e.g., biometric characteristic, such as a fingerprint).

Your example was two things that someone knows -- one factor.

oh yeah, what was i thinking O_o sorry, my bad.

No problem. :)

I'm not sure I'd call that two factor authentication. Sure, there are two unknown elements - effectively, username and password - but I'm pretty sure the intent of two-factor authentication goes a bit further than that.

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