What access we have to the computer (i.e. can we tell which operating system is being used) during the online experiment?

Online experiments
2

Hi @sijiazhao, there are some suggestions here on how to detect mobile devices using code. E.g., you could use the following (but note from the link, it may not always be effective):

if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ) {
  quitPsychoJS('Mobile device detected. Goodbye!', false)
}
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