From Longman Dictionary of Contemporary Englishlog in/on phrasal verbTDto do the necessary actions on a computer system that will allow you to begin using it to You need to log on to your home page. → log→ See Verb table
Examples from the Corpus
log in/on• Passwords can then be changed so original users can't log in.• Within 30 minutes of receiving EaziLink we were logged on and uploading our copy.• The contents of every breath the patient takes are logged in the computer monitoring his progress.• The message contains an authentication token that allows users to log on to network services.log to• If you have a modem you can log on to a bulletin board and download it.• The message contains an authentication token that allows users to log on to network services.• Using a script command, the user is automatically logged on to the appropriate host once an application is chosen.• In San Francisco about 100 people, many of them reporters, have asked to log on to the list.• Each user has a unique username and a password which must be used in order to log on to the network.• The result has been that customers are often unable to log on to the system.• Members are invited to log on to their computers and call up the Heisei menu. 