However, you can buy full sheets of currency (edit: from the bureau of printing and engraving) that are for novelty purposes and the way they get around it is all of the serial numbers are the same. So they do actually print full sheets where all the serial numbers are the same. The only reason I know that is my grandfather had one. Supposedly the reason was if you happen to cut it yourself you “could only use one of them”.

But you can’t run encryption on it. So that means no WEP, no WPA, no SSL, TLS, VPN, etc.

So yes, while you could run your own wireless access point, it doesn’t solve the main requirement for most people which is privacy.