BLUETOOTH

I use bluetooh to pass songs and photos with my friends with ours mobilephones and to pass music to my computer too.
The Adventages are that: is free, is fast and if you put a password is secure.
The Inconvents are that if there are persons who knows how to take your information if you are using bluetooth, and they can see your private things. if you don´t use a password is dangerous.
in my opinion everybody shoud can use the bluetooth with security, using passwords.