After having a high "lost" rate we now use recorded which has now dropped to almost 0, when people call to ask where there item is, there is now a signiture online (normally) and you simply ask if they know it, a couple of examples we have had recently is:
That was my daughter, (after ringing here) it turns out she though the parcel was a present for a young sister and hid it, then throw it away after cleaning her bedroom and hoped he mum didn't find out, but she did and if it hadn't been signed for that would have been £35 I would have lost.
Another
Before xmas they checked the signiture and it turn out to be a son who thought it was a christmas present and hid it in his bedroom, andother £55 which would have been lost.
Before moving everything to signed for we had very little returned from Royal Mail almost nil, now we have above 3 per day, but at least we can know where they are and can act on them confidently, with DSR it doesn't matter what has happened if a customer says they don't have it your stuffed and it will happen more and more.
The thing after that is, I only received 2 of the three.