Although the address scheme (e.g., "0x0fe2e20716753082222b52e753854f40afddffd2") has its own strengths in that it efficiently protects the privacy of account holders, it also proposes major problems in terms of end-user experience. First, it is very difficult for a human brain to memorize, or even recognize, such addresses, making them prone to input mistakes and various human errors that often lead to non-trivial financial damages. Second, such scheme takes away from end-users the power to choose one’s own preferred identity handle that’s easier to memorize or use. Combined, these problems are among the toughest usability hurdles that cause BApp user experience for typical end-users (who are more accustomed to the simpler, frictionless user experience offered by legacy mobile apps or services) to be perceived as alien, incomprehensible, and severely inconvenient. To overcome such challenges without undergoing architectural modifications at large-scale and preserving backward compatibility, Klaytn opts to provide a mapping between a 20-byte address to a 20-byte length text string that end-users could assign their own preferred values to. This feature in Klaytn is called human-readable address (HRA). Currently, this feature is under development, and we will provide more information when it is ready.