Is the iPhone Simulator UDID unique for each installed instance?

Question

i.e. does this call:

NSString *udid = [UIDevice currentDevice].uniqueIdentifier;

return always the same UDID when it is executed on the iPhone

Answer 1

Open terminal and type in system_profiler SPHardwareDataType - the output under Hardware UUID is the ID used for all instances of iOS simulator running on that specific computer.