How long can the public security system check the housing records?

The public security system can check the housing records for six months to two years. According to "How long can the Public Security Bureau check the rounds?" As published on the search website, the public security bureau can check the rounds for six months to two years. According to the law, you must register with your ID card to check into a hotel. At the time of registration, the passenger's identity documents shall be checked and truthfully registered according to the prescribed items. The registration records will be sent to the public security bureau for backup, and the public security bureau can naturally find the check-in records. Only those involved in or suspected of committing crimes can be investigated, otherwise personal privacy will be violated. The housing records in the hotel cannot be deleted and will be kept in the public security system for 3 years. After 3 years, the check-in information is automatically deleted, and the public security system has the right to query the check-in information of users within 3 years. However, the retention time of registration records in hotels will be shortened.