Use 'sign in' when privacy is important, as it suggests secure access to personal information.

Privacy Matters

Consider 'sign in' as the starting step before using services that require a personal account.

Initial Step

'Sign in' often marks the beginning of a session where you'll be identified until you sign out.

Use 'sign in' when you are physically arriving somewhere and need to indicate your presence.

'Sign in' can be a way to document the time of your arrival for security or attendance reasons.

Often used in professional or formal contexts, like offices or medical appointments, to manage visitors.