Me and partner did a project that someone touches the door or anywhere in the house the alarm will go off. We will being doing this on microbits. The microbits will recognise when someone touches the door then it will go off. Also, the door has to be locked for the alarm to go off. If u unlock the door thought it wont go off.  Another way it wont go off once u go in the house there will be a keypad to put the password in it. To turn the alarm off. We thought it would be cool to do this. So that’s why we did this project.