on my ipod touch 4ht gen i go to settings>general>about and scroll down and see wifi adress with a number letter mix after it with colons in between each two ( ex. 4C:34:57:AD:..) what does it mean? i live where there is no wifi, highspeed or cable. i have been looking for a way to get wifi to my ipod. we cant afford to get a wireless router or satalite.. is this wifi adress some way it recieves it? what exactly is bluetooth? it is the same kind of number letter code after it... And also what is VPN????? is there any company that just somehow sells wifi or something, like a monthly payment for it?