Last updated 1 November 2026
Postal and courier services are infrastructure. They keep goods, documents and communication moving through every part of an economy, and they are treated as unremarkable precisely because they usually work.
For something so load-bearing, safety in the sector is strikingly under-examined. Most of the discussion about delivery platforms is about speed and price. Very little of it is about the two moments where a parcel is actually at risk: when it leaves the sender, and when it reaches the receiver.
Every step needs its own key
Smart lock systems are a straightforward answer to that. Instead of one person being trusted with the whole chain, each party gets a digital key to the one step that is theirs — the sender, the runner, the receiver.
That is how a Pinned parcel moves. The sender gets a code to open the compartment they are dropping into. The runner gets a code that lets them take custody, and no more than that. The receiver gets a code that nobody else has, which either opens the Pod or closes the door delivery.
Who holds which code, and why it matters
The handover code is the part worth understanding properly, because it is doing more work than it looks like.
It goes to the receiver by SMS and to nobody else. It never appears on the public tracker — not to the sender, not to the runner, not to anyone who happens to open the tracking link. So a door delivery cannot be completed by someone who simply happens to be standing at the right door at the right time.
For the runner, giving the code is how the trip is closed and how they are paid. A trip that cannot be completed affects both their earnings and their rating, so they have every reason to find the right person rather than the nearest one. The incentive and the security point in the same direction.
And where money is still outstanding — the delivery fee, or a payment for the goods inside — the code is held back until it clears, then released at once. That is why it sometimes appears blurred on the tracking page. Nothing has gone wrong; the code is simply not due yet.
What this buys the people at either end
Encoding each step is what lets a parcel travel from a counter to a door without anyone having to take it on trust. The sender can see it moved. The receiver can see who is bringing it. Neither of them has to rely on a description of a shirt.