Final answer:
Landlord responsibilities include rekeying security devices when a new tenant moves in, with time frames varying by local laws. There's no universally applicable answer without more information on the jurisdiction.
Step-by-step explanation:
In accordance with landlord responsibilities, it's essential for landlords to ensure that all security devices operated by a key, card, or combination are rekeyed at their expense. While the specific time frame for rekeying can depend on local legislation and regulations, it's common in many jurisdictions for these security measures to be addressed shortly after a new tenant moves into a property. However, without specifying a particular jurisdiction or citing a specific statute or law, there's no universal answer that applies everywhere.