given 4 times, 2016
Robust Second-factor Authentication with PHP
Single-use codes, phone verification, apps, and physical devices: how each second factor works and what it costs you.
About this talk
Single-use codes delivered by email and SMS, mobile phone verification using automated phone calls and installed applications, or standalone physical devices – there’s more than one way to do 2nd-factor authentication (2FA).
There are benefits – and downsides – to each. Learn how each one works and what is best for you and your users. Avoid some common mistakes when rolling out 2FA, and take a look at how you can add one, or many, to your application’s login flow.