Residential addresses typically do not require a signature. HOWEVER, if there is no one there to accept the package, and the USPS driver does not feel comfortable leaving it for ANY reason, s/he is NOT required to leave the package. USPS will make three delivery attempts before returning the package to Dancing Deer. USPS will leave a note on the door following each delivery attempt.
Business addresses do require a signature, but not necessarily from the recipient whose name is on the box. Anyone in the building is able to sign for the package.