Maarten Billemont's Master Password application and BIP-85 both apply deterministic processes to streamline cryptographic key and password management. Master Password leverages an algorithmic approach to generate unique passwords from a master key, factoring in the user’s identity and the respective service's identifier. The design negates the need for storing a list of passwords, reducing exposure to data breaches.

BIP-85, which Billemont may have initiated, applies a deterministic model within Bitcoin's security framework. Users can create multiple child seeds from a master seed, simplifying the management of multiple wallets. This reduces the complexity of securing cryptocurrency assets. These innovations address the issue of memory strain in managing numerous credentials and the risks associated with storing multiple sensitive keys. Both the Master Password and BIP-85 methodologies are examples of a shift towards deterministic security models in technology.