RFID (Radio Frequency IDentification) is a system that would use a RFID key fob, or card to gain access to a location. Yes, regular keys are initially cheaper, but the expense can grow. To make the best option, the lock will have to be changed with every move out with a tenant. This means new keys must be made, and a locksmith to change the locks. Creating a master key is even more expensive of a venture. Physical key locks can be picked, and entry gained without a key. Keys can get lost, or stolen. If a bad actor knows where that key belongs too, it is a matter of time before they go to the location, gain entry, and rob the person. Keys were essential once, but if a property owner can afford to maintain a system, then RFID makes more sense.
An RFID key can be disabled immediately if lost or stolen. A new key card can be issued to you, and it will work within a few minutes of issuing the new key. This means the bad actor can’t gain entry into your residence if the key has been disabled. Yes, you will need to pay a higher price for the key card, but this price will be refunded when the key cards are returned. If they lose a key card, you will lose that $25, but you would have to make new keys if you lose your keys, and may have to pay for a locksmith to come and change the locks. With that said, this is a smaller price to pay.
The RFID key card will also be used to open their mailbox, and any mail storage lockers that might be in the building. This is applicable to apartments only, and houses will have just a mail slot that their mail will be inserted into.