We're currently working with a new device which supports cookies but it does not persist them, so when user leaves web/app and relaunch it 30 minutes later, previous cookies have been already deleted. In this particular case (non persistent cookies): - does it make sense to use marketing cloud visitor id (mid?) or it would be better to use visitorID (vid)?
- is it possible to override MID? I could save that value in localStorage the first time the app/webb is launched and reuse it next time