Rentals are a bit of a worst case there, too, because you don't have reason to adjust to the bulk and live with it. Also, depending on car company some of the

Rentals are a bit of a worst case there, too, because you don't have reason to adjust to the bulk and live with it. Also, depending on car company some of the bulk is hiding last resort physical keys and/or just over-compensating and thinking their brand "needs" big heavy keys as a marketing choice. There's not always a lot of reason that they need to be that much bigger than a Tile or Airtag, the raw electronics are generally really similar. Additionally, if it was a personal car, some of them even support using just about any major bluetooth-capable phone (or watch) as a remote and you might not even need the extra bulk of a key beyond your additional wearables. That's really tough for rental cars to support, but a great advantage of modern personal cars as the software improves. (Though with the number of hotel chains that have been moving to keys that work on personal phones, I wouldn't be surprised if rental car companies weren't at least investigating the idea of improving those key flows.)