I'd imagine it'd play out pretty much like any other courier service? So long the couriers are plausibly not involved they're not gonna get in trouble right?

It's a boon for LE. They'll have access to the data. If they make enough fuss, they might even get Uber to encourage drivers to report suspicious activity. (What do they have to lose? No one wants to stick up for evil drug dealers.)

Remember how some of the Silk Road vendors were caught. LE found a couple suspicious packages confirmed to contain unlicensed medicines (supposedly via random inspection, but could have been secret spying, or regular gumshoe work). Investigators go to originating USPS office, look for suspicious activity. Quickly find it, make a bust.

Really, it should just point out the silliness of such contraband laws in the first place.

This is already a thing. A guy down the block from me was receiving a few pounds of weed through the mail every week for several months.

If you ship drugs with UPS or Fedex, law enforcement will dress up as the driver and personally deliver your package. They arrest you as soon as you sign for it.

Source - know many people at UPS and Fedex

What? I doubt that would hold up in court. I sign for packages all the time without knowing what they are, does signing for a package really mean anything other than "I've received a package and it doesn't look damaged"? Should I be making the UPS and FedEx guy wait as I open every package in front of them to confirm someone isn't maliciously sending me drugs?

I remember this happened to a minor league baseball coach for the Red Barrons back in the '90s. Basically, someone who knew the guy wanted to send the coach an envelope with cocaine in it. So the genius gave the envelope to his secretary to mail. The secretary accedently spilled some coffee on the envelope and decided to open it to check the contents. She found the drugs and called the police.

The police, now having the drugs and the guy that was going to send them, hatch a plan. First, they mail the drugs to the coach. Then shortly after the envelope arrives they search the coach's room. Low and behold they find cocaine and the coach is arrested.

I'm not sure how it turned out but it looks like the coach is still coaching to this day:

http://community.seattletimes.nwsource.com/archive/?date=199...