[LintMan]

I think whether a signature is required by UPS or not is specified by the shipper, but it also might depend on the area (ie - whether they think it might get stolen if it was just left there).

I ordered the 2nd day UPS Red shipping, and the guy just put the package in our mail slot without even ringing the doorbell (we were home at the time).

I don't know why they would just have left the package for us, but require a signature for someone else.