Yes, you're right, there are some drawbacks in current practice, and hand written ways to operate is still the norm, and I think that progress can be made, as the tablet has already been put into practice in the ward. The trend of eliminating paper stuff should be inevitable. Besides you have mentioned the use of public blockchain, but actually the integration permission-based blockchain can be feasible, such as Hyperledger Fabric Architecture is a good direction to create a closed blockchain.