log in - Wiktionary
https://en.wiktionary.org/wiki/log_in#Etymology
> By analogy with clock in.
> (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Do we know when it was first used? Before computers? Early multi-user computers? Unix?”)
Talk:log in - Wiktionary
https://en.wiktionary.org/wiki/Talk:log_in
> The etymology is false. "log in" is a corruption of "log on" - possibly a conflation of "log on" and "clock/sign in".
> "Log on" was (and still is) a command in some systems indicating that a connection session to a mainframe was being started. Literally it means "start logging" - start keeping a record of actions taken.
メインフレーム😮
log inはlog onとsign/clock inとの混同だけど文献が見つからないつってるけど誰も情報提供せず14年経ったtalk、しんどい
