Informe confirma uso de supercookies para rastrear móviles

#11 #16 developerboards.att.lithium.com/t5/Technical-Questions-Discussion/X-Up
"Your x-up-subno is tied to your SIM, not your phone. If you replace your SIM card - you will get a new subscriber ID."

AT&T:"The x-up-subno is an identifier that is inserted by the gateway into the header and is always there for all subscribers. The x-up-callingline-id is only there for certain subs where we have allowed it as this is the phone number. "
:-O :-O :-O