As Chris noted, many US cities and hospitals pretty much have the same program, minus the delivery box/airlock thing.
The only difference is that to the desperate/ashamed mother who "was never pregnant" as far as her friends/family was concerned, this removes the final fear/embarrassment/stigma of having to confront a nurse or admissions person face to face, which I guess removes any final incentives to dumpster the baby or do something else deadly, or unsafe like chicken out and leave the infant on the doorstoop where it could be stepped on, rained on.
We really ought to un-fund and withdraw from the U.N. That ought to be sufficient to kill it off for the rest of the world...
Only the U.N. would worry that a baby-box violating a "child's right to know it's parentage" outweighs the statistical chance of infanticide.
IMO, they're getting like PETA, who euthanize more animals than anyone else in America.