That is somewhat of an idea however, as far as I know:
You are not allowed to send without a return address anymore, and my region
would still be known if I went to some nearby other place to send.
Inkjet printers print identifying information in yellow inkdot matrixes, so
which printer printed it may be known.
Just like in soviet Russia.
This is the modern democracies. Would men want this if all the men of the
country were in control? No. But democracy isn't about what the men of the
country want. Women I've talked to are always fine with "getting the bad
guys", because they themselves never are the badguys. It is we who are:
worthless males. That is who laws are written against. Anything we might
want: good weapons, powerful vehicles, nice young girls, secure electronic
devices... is banned or eventually banned. Our countries are our enemies.
They know it, we know it, and any of us who step out of line go to prison for
years.
Also possibly:
DVDs, CDs, etc may have identifying info on their inner ring about what pack
they are from.