Can I lock a iMac using iCloud if someone sign outs from iCloud?

[razibhasan]

Hi everyone,
I just wanted to make some tests on my iMac. I activated "Find My Mac" through iCloud. When I am signing out from iCloud (Control panel on OSX's system preference) iCloud.com is showing no device to track. Also, if I change account on iCloud the device cannot be tracked.

My question is;
If my iMac gets stolen and if the theif sign out from iCloud or change iCloud account can I still track or remote lock the iMac?

 

[D.C.M.]

Hi everyone,
I just wanted to make some tests on my iMac. I activated "Find My Mac" through iCloud. When I am signing out from iCloud (Control panel on OSX's system preference) iCloud.com is showing no device to track. Also, if I change account on iCloud the device cannot be tracked.

My question is;
If my iMac gets stolen and if the theif sign out from iCloud or change iCloud account can I still track or remote lock the iMac?

Have you already looked here: http://support.apple.com/kb/TS4006