To gain access to a computer system, usually by providing a previously agreed upon username and password.(verb)
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Use "log in" in a sentence
"Robert was the first to reach them, swimming from his log in mid-pond with long, sure strokes."
"But it was Arisa who came up to him as he stared out over the rolling waves, hoping he could spot a halfsubmerged log in time to warn the helmsman about it."
"His “diary” can be reconstructed from three sources: (1) the outgoing message log in PHPT 35, pp. 437 and 439 and PHPT 12, p. 262, (2) a two-dollar charge for the Packard taxi in FBI file 65-41886-20, (3) proof that the bomb-plot message was intercepted at Station SEVEN and CAST can be found in RG 38, Station US papers, folder 5830/30, MMRB, Archives II."