[such12]

The phone system doesn’t lack regulation. Phone spam is already illegal. The reason for phone/VoIP spam is because the system is too inflexible to make it easy to prevent, and the reason the system is inflexible is that it is regulated.

We already have portability. When you sign up to a new network, you provide your phone number and email address, and your friends can find you.

[aeontech]

What if you don’t want to provide your email or phone number to a network?

What if your friends only know you online, and do not know your phone number or email address?