This is a good basic security measure that can keep prying eyes from seeing what you're currently working on, or accessing your user account data.
Nke a bụ ezigbo nchebe nchebe nke nwere ike ịme ka ị ghara ịhụ ihe ị na-arụ ọrụ ugbu a, ma ọ bụ ịnweta data akaụntụ onye ọrụ gị.