First of all, what does MDST stand for? MDST stands for Multi-Device Session Tracking; it’s a new mode supported on iAccu v1.1 and Accudemia where you can use many devices (iPhones or iPod touch) to track attendance. iAccu usually requires all card swipes (to both sign-in or sign-out) to be made in the same device. When MDST is enabled, multiple devices can “join” the same session and work all together now . Once you have downloaded the iAccu update , start by going to Settings to set up your device. In the “ Center based ” option under Tracking settings, there’s a MDST section with some options. Session duration lets you set the default session length that will be used when you create a new session. Sign-In and Sign-Out windows let you set the default period before and after the session starts when students can login and logout respectively. For example, let’s say that there’s a conference starting at 3pm, with these options you can allow students to sign-in from 2:50pm until 3:10