Custom login method

[Knofan]

Hey Guys, im guessing this belongs here in the app part of the foum.

Im trying to add another method of loging in as a customer to my site. I would like to have the possibility to verify the customer via BankID. Its a Swedish app that can be used to veryfi the identity of the customer.

I would like to offer customers that idenify with BankID other ways of paying for example. So my thougt was that a customer account i created when the user is cleard.

But how can this be done? Can anyone point me in the right direction?

Thanks