@markah2007 the easyiest way is to make sure that you keep your keys in a Farady pouch, including your spare key. Get into the habit of place your key in the pouch as soon as possible when you have finished with the car. This what I use, though no longer available, but there are lots of others available. I hope this helps
The ioniq 5 can be stolen without using relay theft so the faraday pouch wont help if they have an emulator, they use an emulator on an old modified gameboy and it mimics the key and procuces a matching code and allows them to start the car and remove your bluelink account and drive off in seconds.
The issue is the car constantly scans for keys so Hyundai made their keys go to sleep when stationary to stop relay thefts but it doesn’t help because the key can be emulated
