sign out

US /saɪn aʊt/
UK /saɪn aʊt/
"sign out" picture
1.

to record one's departure by signing a register or similar document

:
Please remember to sign out before you leave the building.
Visitors must sign out at the reception desk.
2.

to end a session on a computer system or website

:
Remember to sign out of your email account when you're done.
I always sign out of social media on public computers.