How does this work?? Well, basically the scratch project stops itself when you go to another tab, but somehow this is not the case for ''wait'' blocks, these blocks keep running when you go to another tab. This makes you able to make a project which can recognise if you left the tab or not This is done with just 2 lines of script! It might not work if you have a slow computer. Feel free to use it with credit! #Tab-Detector #parkje1