Isn't there a worry that one of the 3 multisig keys is stored on Square's servers?
Discussion
that’s the security model
IT IS USED TO MAKE BACKUPS EASIER.
THE COIN CANNOT BE STOLEN EVEN IF THAT KEY IS COMPROMISED.
YOU MAKE A GOOD POINT. IT GIVES THE MASSES MULTISIG SECURITY WITHOUT WORRYING ABOUT THE COMPLEXITY OF IT
so is this similar to the multisig model of Casa but tied to this hardware?