Do laptops emit an identifying code/number just like a cellular phone would and

Do laptops emit some fdentifying siganl or number as a cellular phone/any other phone would and, if so, can this be used to track a stolen laptop even if it has no tracking software program?
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More about laptops emit identifying code number cellular phone
  1. serial numbers, but they arent digital.
    mac address. operating system user info. but they can be changed.
    you are probably sol =[ what kind of laptop?
  2. Mac address when using wireless
  3. I dunno about windows vista and 7 but I know that windows xp / internet explorer use to leave a trace
  4. If your laptop has a internal hsdpa data card like the type in some of the dell laptops then maybe you could track the machines with the right setup, but its a long shot.
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