Use the spare key if available
Contact the property owner, landlord, or building manager
Call a licensed locksmith
Use the door’s emergency release or interior unlock mechanism if accessible
Check whether another entrance is unlocked
Remove the door from its hinges if it opens inward and the hinges are accessible
Use a credit card only on simple spring-latch doors, if you are authorized to enter
Use a lock bypass tool only if you are trained and legally permitted
Break a window only in a true emergency and only if you are authorized to do so
Contact emergency services if someone is in immediate danger