I like the idea that every time you do a transfer on your digital wallet to another digital wallet a two way factor should be indicated thus it will notify the owner if there is any transactions to be made so as to secure more the digital wallet being held. I wish that this is already applied on some digital wallets and if there is any please comment on the thread and i will checked on it. This will minimize hackers to hack digital wallet.
You can do this in the exchange wallet. For some peoples, they prefer using exchange wallet because it is more secure.
But actually, there are some exchanges have been hacked. So, there is not really very secure wallet.
anyway, i think you cannot use 2fa on your personal wallet.