Is it possible to set free shipping based on the end user's membership status?

The free shipping indicator is based on the price rules. For example:  "If cart value is x, then delivery with this carrier is free". There are 2 ways of setting this logic from Ingrid’s end

1. The merchant can provide us with an attribute, and we could have this in price rules and reduce the price to 0.
2. Create a voucher and assign this voucher based on the status of whether the user is logged in or not