All blood glucose meters need to set a new password when using a newly opened box of test strips. What is the function of this password? The password corresponds one by one with the test strips. Different batches of raw materials and environments will result in different direct test results, so correction is needed. The function of the password card is to correct this error. Therefore, every time you open a new pack of test strips, you need to set the password card first. This is very important for your monitoring results. After the whole box of test strips has been used up, the password card has completed its historical mission. Please dispose of it properly to avoid confusion with other test strips and prevent human errors.