the security part is the interesting one

and i guess it could be achieved

right now i would only use as a gimmick

to showcase sats to

normal people

but yes if you give someone the chip, he can withdraw the funds later...

trustmodel should be considered

so it would only work with friends and family

but development on the security of the chip

could boost it to real world cash backed by cyberspace sats !

its just key pairs like in the open dime, only with keys for the lightning network