Collector stored my Feature Service/Server credentials?

[Lake_Worth_BeachAdmin]

I have a service hosted on Arc Server which requires auth to access it. I did not saved creds to service and in AGOL it prompts me everytime to see the service. However in Collector it prompted me the first time but ever since it does not prompt me. Does collector save these credentials somewhere or is there a way to not allow this? I do not want creds saved to the app if phone is lost or stolen I do not want person x to have access to these services.

Am I missing something here? Is this an Android thing? 

[RandyBurton]

On Collector, under "Switch Account", there is an option menu (three dots) to the right of the account name which allows you to "Remove" the account.  The user will then have to use the log-in procedure to access the account again.

[Lake_Worth_BeachAdmin]

right this logs them out of their AGOL account I want the option for collector to not save my service credentials (credentials to my arcserver) different from AGOL