pull down to refresh

I tried about PMB and CMRA before, I'm simply looking for other alternatives where no one know who the other party is ("legally" speaking). And everyone gets what they want.

For example, I heard cases in the US of dudes using $ notes' serial number as receiver, so when they go to USPS to retrieve them, they use that as "ID". Weird stuff. I feel the only one needed to know about this information is the one responsible for the transport.