Wiktionary
check into
vb. (context transitive English) To formally announce one's arrival at a location or event to a proprietor or employee of that location or event in order to secure admission, accommodations, or other services.
WordNet
check into
v. examine so as to determine accuracy, quality, or condition; "check the brakes"; "Check out the engine" [syn: check, check up on, look into, check out, suss out, check over, go over]
Usage examples of "check into".
It would be appreciated if those arriving barefoot would check into the SFWA suite one hour in advance of the ceremony.
All of my ID is useless, my accounts are locked-I couldn't even check into a motel without using bogus identification.
I'd be a lot happier, though, if you'd check into sickbay for an hour or two.