This would certainly be helpful to many folks, however I believe it would make their abuse- and fraud-detection methods more difficult.
There are currently big ops which filter through masses of detailed data from signal strength, which can be (and presumably is) sifted
to find patters for abuse. For example, what appears to be the same phone suddenly appearing on the network, at a reasonable geographical
distance from the "active" phone/device. It seems that those operations would have to vectorize as it were and further invade the privacy
of consumers to maintain their attempts to protect their business.

The tools (hard & soft) to basically "clone" a phone, would be handy for plenty of Fair Use situations,
although I guess stopping by the kiosk isn't a big deal.... story: I just had a friend whose phone broke in half, and
although she could still read her phonebook off it, she needed a replacement... I wanted to offer her either
of two older models I have here, but, difficulties ensue, as you might know about the abundance of incompatibilities in SIM cards and so forth.

These problems are in fact an SEP (not my problem), and I'll hope along with other readers that good market competition along with DIY culture
and open source innovations will spur enough positive changes for all users, that we'll be enjoying a really enabled tomorrow with appropriate
technology trumping bad implementation. I enjoyed reading your article, 'Replacing the FCC with "don't be spectrum selfish"', and appreciate
the directives therein, however it is nearly impossible to explain invisible things to people :) I suppose the more reasons there are to care,
the more attentive and imaginitive the public's reception of and response to RF issues will be.

tnx,

ben