Accessing without password

Hi,

When we're in the office, we authenticate in our virtual desktops using smart cards so the users don't need to know their Active Directory password which is automatically generated.

Now, we want to provide access to virtual desktops via the Internet. In this case users will access from their home computers or their tablets. Of course, these devices don't have a card readers so we will have to give the Active Directory passwords to the users.

Anyone know a solutions to access virtual desktops without knowing the Active Directory password? (It doesn't matter if it's a 3rd party solution).

Thanks,

Josep.