Thanks for reminding me. Now that you mention it, I think that IMEI is probably used most places now (including the US where I am). ESN is probably just an anti

Thanks for reminding me. Now that you mention it, I think that IMEI is probably used most places now (including the US where I am). ESN is probably just an antiquated term that's out-of-date but which is still stuck in my head. Anyway, I just meant the device's hard coded globally unique identifier.