So when you buy an eSIM, it's completely digital right? As in, no card for you to put anywhere.
Then how do you switch between different eSIMs on your devices?
Update: I googled it, and the first thing I found was lifetime eSim for €2.50, to be soldered inside a device. This is very scary, it will create a whole new level of attacks. Imagine replacing someone's hardware wallet with a fake device with esim that instantly broadcasts the PIN. Air gapped devices will need a faraday cage to be sure.
I believe you can coat or wrap the device in aluminium foil to prevent the WiFi and cellular signals from being broadcasted, thus preventing this type of vulnerability or *any* internet/NFC/Bluetooth access from the device, for that matter. QR codes will still work of course.