Why do I need to input my personal information every time on the SMS Big Data Travel Card?

Because the records of big data travel cards are monitored by major communication companies according to the activity scope of your mobile phone card, you have to re-enter the information every time to get more accurate information. But you only need to enter your personal information when you use it for the first time in a day, or you only need to enter your personal information when you don't use it for many days.