Finding the right parameters to hash for geneating typehash and serializing the input data was one of the biggest challege we faced in designing in the smart wallets.We used determinitic address detection to find the address of the smart contract that would be deployed on demand by a user bearing a certain public key.We had to revise and brainstrom on EIP712 to get the right understanding.The second chanllege was dealing with Li-Fi protocol which served most of our utility purpose that can show all the possible use cases of smart wallets which eventually eneded up uncompactable.We had verify EIP 4337 and were successfully able to build a implementation which is very secure and abstracted at various levels.