Once the biometric security arrives that will be the best way to store the crypto for sure. Since that kind of technology is unhackable so if you lose it no one will be able to open it and you will be able to open the wallet with your eye which is cool as well 
Also if you lose your wallet you will be able to get the new one and still open it with your eye.
this is a very logical and advanced wallet technology. biometric face recognition system is now available technology and the most beautiful. the encryption and password retention era is over. Also if you lose your wallet you will be able to get the new one and still open it with your eye.