2018 BRZ - programming additional Smart Key
 

I have just one Smart Key for my 2018 BRZ Limited. Is it possible to somehow add another Smart Key to the car? I have the following:
- Tactrix OpenPort 2.0
- Mini VCI
- Toyota Techstream


Would I need any additional equipment/software? I am also missing the key plate btw.



If it is possible, does anybody have any experience with aftermarket (probably chinese) smart keys, and/or refurbished ("wiped") ones, available on auction sites? Not only are they waaay cheaper, but also because I have a USDM car in EU, I've been given a waiting time between "a few weeks and a few months" at the dealer's for a new US Smart Key.