Android can I Make App controll Android System
<p>I want to create App that Make My Device with multi-Users "username and password for every user"
Users can share the Device , every user can open different Apps "Ex. Camera , Contacts" and prevent from another app </p>

<p>the App must run at system Start up    request your username and password  and then</p>

<p>the App will Make You Run Some App and Prevent you from some App</p>
