Why do campus cards always receive short messages from hotels?

1. Leak of reserved mobile phone number: the mobile phone number is provided when the campus card is processed, which is also used for booking or registering hotels or other services and will be collected and used by the system of hotels or related institutions.

2. Cooperation between the hotel and the school: If the hotel has a cooperative relationship with the school or student dormitory, they will send short messages to promote promotional activities or provide service information through the list or database provided by the school.

3. Similar mobile phone numbers or wrong numbers: Sometimes hotels will enter the wrong mobile phone number when sending text messages, or others' mobile phone numbers are similar to their own.