I bought my own elevator card. Can I see that this is not his card?

Of course. The property computer system can record and manage the room number and household information of all residents in the community, including real estate license, purchase contract, property owner, temporary population and other information. The elevator card you bought is a blank card without any information, but the property has a background management system, which can check whether the cardholder is a community owner or a visitor and the card opening record of the card. Attributes can read cards that are not attributes.