locked with pen

A locked (closed) padlock with a pen or stylus tip positioned at various angles in front of it. Vendors implementing the same design as theirs could represent a digital certificate in public key technology. There may also be similar applications Apple's design previously and Google's design both show a stylus tip. This emoji does not appear in page titles on Apple's Safari web browser, presumably to prevent lower profile sites from pretending to have HTTPS installed for encryption.