locked with key

A locked (closed) padlock with an upright key on the right. Vendors implementing the same design as theirs can represent a digital key in public key technology. May have similar applications to "key". Sometimes used to represent a locket to symbolize romantic love and commitment. Apple's design previously featured an Easter egg UM242 on its key, referencing the locks on Herman Miller office furniture. Facebook's design once showed a silver key with its head at the bottom. This emoji does not appear in page titles on Apple's Safari web browser, presumably to prevent lesser-known sites from pretending to have HTTPS installed for encryption.