Thanks. I may have asked that badly though, was reading on my phone and typing is a pain.
I have an
aftermarket remote starter in my current vehicle, they gave us a choice of using the car's factory fob, or of getting a new dedicated fob. We went with the latter (chose 1-way not 2-way to keep the cost down). The main reason was that the range for starting with the factory fob would be the same as for locking/unlocking, which intuitively is much shorter than needed for remote start. When we were looking at new cars a couple of years ago, Subaru mentioned StarLink includes remote start using the app (among many other features) and included 3 years free, then paid subscription. I scoffed at paying but then realized that it would take several years of paid subscription after 3 years (I forget the cost) to cover the cost of an installed remote starter.
For Genesis, I guess that's "Genesis Connected Services" which they mention on the Canadian site at
Genesis Connected Services - Mobile Remote Application | Genesis Canada (I've seen some discussions from 2019 of Subaru not actually delivering, as they were waiting for government approval and/or signing a deal with a cell carrier, but surely they've solved those). I don't need to start my car from the far side of the world, but I do want to do it from a longer distance than a lock/unlock fob allows. Of course I want to be really close for Smart Parking and would probably use the fob even if the app allowed it (physical buttons and all that).

In Canada RSPA shows up on the top 2.5T Prestige and the top 3.5TT Sport Plus. Reviewers dismiss it as a party trick, but it's one of the features that drove us to Prestige from the trim below, and it would be a compelling feature if we were to get a Hyundai instead.