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by jasiek
4574 days ago
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Two-factor authentication using USSD. I've integrated a system like that with OpenLDAP. When you attempt to authenticate, a code gets displayed on your cellphone screen. You could also prompt the user to enter a code, etc. From what I gather it is cheaper to use than SMS, and there's no trace on the phone after the modal dialog is dismissed. Also - works with every handset. |
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