CryptoPlatz it is compatible with Trezor, Ledger, Exodus, TrustWallet and any other wallet that demand you to save the seed recovery phrase on a paper.
What makes it compatible with wallet or not?
In my opinion you just use NFC to transfer some data to the card (so you have NFC chip in/on the card) and as it could be any data, it has nothing to do with BIP39 compability.
And as I understand, the same application is needed to read from NFC chip and restore the content, right? That would be very very very risky. Now, on market we have in general Tile trackers and Apple AirTags. In the past there was also TrackR - one year ago they stopped supporting their product, removed apps from the mobile stores and suddenly all the products they sold during last years became a plastic junk.
Remember, our app will be open source on GitHub, so anyone can read and copy.
But more important, if you know the password used to encrypt the data (seed), you can decrypt using AES-256 algorithm.
So you don't need our app, it just exist just to be easy to use.
