In addition to what has already been said, I’d definitely talk about Javacard implants and their capabilities (FIDO2/TOTP/HMAC/PGP/Crypto Wallet). Might be nice to touch on contactless payment and the current roadblocks with EMV.
Oh yeah, and the durability, longevity, safety, as well as basics of the installation process. DTs tests they perform on their tags would be great examples.