sharing accounts AD evidence

would there be any way technically to determine if 2 devices are using the same AD account to access network resources? And if so how could it be done? we have an added complication in that half the users don't have desktops/laptops and use thin client WYSE devices to access a citrix environment, so unsure if this adds to how realistic this may be to prove or not.
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Shaun VermaakTechnical Specialist IVCommented:
You need to enable audit similar to this process then monitor successful login events
Please specify what you do with your Citrix env. - Do you let people logon to their own virtual desktop installation on a citrix terminal server?
Because if anyone uses his own virtual installation, of course we see different machine names in the logs of the domain controllers and could easily find out if one and the same user name is used on different machines.

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