By the way Tibu, this question was never answered and I'm curious about it myself (though I don't recall ever reading that on the Satochip site:
What does it mean? You can import into Satochip single private keys which were exported from, say, Core?
One by one?
One other thing that I hope isn't too far off-topic: As I was reading the description of the DIY SIM wallet I noticed that it's badly in need of some editing. As an example:
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-> https://wallets.thebitcoinhole.com/
Hello,
Sorry for the delay. I'm not very often here.
Regarding the keys import, your previous assumption regarding Electrum was right. In fact, you can importe BIP39 seedphrase but also other type of seed. Maybe we should rephrase this to be more clear.
I have update the SIM product page: https://satochip.io/product/satochip-diy-and-developers-card-sim/
You are right, we should be more careful with English translation. This one is way better. Thank you!